时间:2019-01-12 作者:英语课 分类:2013年VOA慢速英语(六)月


英语课

 


Breathing Easier: How to Control Asthma 1



This is Science in the News. I’m Shirley Griffith.


And I’m Bob Doughty 2. Spring has returned to the United States. The sky is blue, the grass is green and many plants are flowering. Spring can be a beautiful time of year. But it is especially troublesome for people with asthma. High pollen 3 levels can keep asthma sufferers from enjoying spring flowers and the weather.


Asthma Awareness 4 Month


May is “Asthma Awareness Month” in the United States. And May first is “World Asthma Day.” The Global Initiative for Asthma, or GINA, organizes the event every year. GINA is a joint 5 effort of the World Health Organization and the National Heart, Lung and Blood Institute of America's National Institutes of Health.


GINA held its first “World Asthma Day” in 1998. This year, the theme for “World Asthma Day” is “You Can Control Your Asthma.” GINA first launched this education campaign as part of the event in 2007. The group notes that while asthma cannot be cured, it can be successfully controlled.


Asthma is a disorder 6 that causes breathing passages to narrow. This reduces the amount of air entering and leaving the lungs, causing difficulty in breathing. 


The World Health Organization says asthma affects about 235 million people worldwide. The WHO says asthma is the most common chronic 7 disease among children. And it says the disease affects people in all countries around the world and at every development level. However, the WHO says 80 percent of asthma deaths happen in low and lower middle income countries. 


Asthma affects not only millions of individuals, but families and economies alike. The yearly economic cost of the disorder is said to be close to 20 billion dollars. And, the World Health Organization warns that asthma rates are increasing worldwide by an average of 50 percent every 10 years.


Asthma Attacks


Asthma happens when tissue that lines the airways 8 to the lungs begins to expand or swell 9. This swelling 10 makes the airways smaller. The muscles in the airways tighten 11. Cells in the airways begin to produce a lot of mucous 12. This thick, sticky substance can cause the airways to close even more. This makes it difficult for air to flow in and out of the lungs.


This series of events is called an asthma attack. As asthma sufferers struggle to get air into their lungs, they may begin to cough. They also may experience wheezing 13 -- breathing hard with a breathy, whistling sound.


Some asthma sufferers have tightness or pain in the chest. They say it feels as if someone is sitting on them. When asthma is most severe, the person may have extreme difficulty breathing. The disorder can severely 14 limit a person's activity, and even lead to death.


Doctors do not know what causes asthma. Medical researchers believe a combination of environmental and genetic 15 conditions may be responsible. Forty percent of children who have parents with asthma will also develop this disorder. Seventy percent of people with asthma also have allergies 16. Allergies are unusual reactions of the body's natural defenses to normally harmless substances or conditions.


Doctors have identified many of the things that may trigger, or start, an asthma attack. Triggers are things that cause an asthma sufferer's airways to swell, or increase in size.


Different asthma patients have different triggers. Allergens are one of the most common triggers. These impurities 17 in the air cause allergic 18 reactions. Some of the more common allergens include animal hair, dust, mold and pollen.


Pollen is a fine dust that comes from grass, trees and flowers. Mold is a kind of fungus 19. It can grow on the walls or floors of homes. It is often in wet or damp areas like bathrooms, kitchens and basements.


The Environmental Protection Agency estimates that 21 percent of asthma cases in the United States have links to mold and dampness in homes.


Air pollution can also trigger asthma. Cigarette smoke is a major problem for asthma sufferers. So is air pollution from motor vehicles. Chemical sprays like air fresheners, hair spray, cleaning products and even strong beauty aids can trigger an asthma attack.


Some people cough, wheeze 20 or feel out of breath during or after exercise. They are said to suffer from exercise-induced asthma. During the winter, breathing in cold air can trigger an asthma attack. So can colds and other infections of the respiratory system.


The Centers for Disease Control and Prevention says more than 25 million people in the United States have asthma. It says the disorder affects more than 7 million American children. Among adults, more women have the disease than men. However, it is more common among boys than girls.


The National Institute of Allergy 21 and Infectious Diseases says the disease affects African-Americans more than whites. African-American children die from asthma at five times the rate of white children.


True Story of an Asthma Patient


VOA broadcaster June Simms has a son with asthma. Arick Simms first showed signs of the disease when he was about two years old.


Arick’s doctor gave him a medicine called albuterol. Albuterol helps to increase air flow and reduce tension in the airways. The doctor also gave him a machine called a nebulizer. It connects to a mask that fits over the nose and mouth.


The nebulizer turns the liquid albuterol into a fog-like mist. Arick inhaled 22 the mist through the mask. The treatments made it easier for him to breathe. During times when Arick's asthma was really severe, he was also given steroid medicines to help reduce swelling in his airways.


As Arick grew older, the doctor replaced his nebulizer with an inhaler. The small medical devices helped him to breathe easier. He also began seeing a doctor who specializes in treating patients with asthma.


The doctor discovered that Arick also suffers from allergies. He now takes medicines every day to help keep his asthma and allergies under control.


Advice For Controlling Asthma


The Global Initiative for Asthma was formed in 1993. GINA works with health care experts and public health officials around the world to improve asthma care and to reduce the number of asthma cases.


In 2004, GINA released a report called "The Global Burden of Asthma." The group said asthma is a growing problem in both industrial and developing countries. It estimated that there may be an additional 100 million people with asthma by the year 2025.


GINA says there are many things that people can do to control their asthma.


People should know the causes of their asthma symptoms and try to avoid these triggers. For example, seek to avoid animal hair, dust, pollen and cigarette smoke. Some people may need to take medicines before they work hard or exercise.


Asthma patients should work with their doctors to control the disorder. They should go to the doctor for medical examinations even if they are feeling fine. They should make sure they understand how and when to take their medicines. They also should act quickly to treat asthma attacks and know when to seek medical help.


The Global Initiative for Asthma urges governments and health officials to do more to improve asthma control. GINA hopes to reduce asthma hospitalization by 50 percent by the year 2015.


This Science in the News was written by June Simms, who was also our producer. I'm Bob Doughty.




n.气喘病,哮喘病
  • I think he's having an asthma attack.我想他现在是哮喘病发作了。
  • Its presence in allergic asthma is well known.它在过敏性气喘中的存在是大家很熟悉的。
adj.勇猛的,坚强的
  • Most of successful men have the characteristics of contumacy and doughty.绝大多数成功人士都有共同的特质:脾气倔强,性格刚强。
  • The doughty old man battled his illness with fierce determination.坚强的老人用巨大毅力与疾病作斗争。
n.[植]花粉
  • Hummingbirds have discovered that nectar and pollen are very nutritious.蜂鸟发现花蜜和花粉是很有营养的。
  • He developed an allergy to pollen.他对花粉过敏。
n.意识,觉悟,懂事,明智
  • There is a general awareness that smoking is harmful.人们普遍认识到吸烟有害健康。
  • Environmental awareness has increased over the years.这些年来人们的环境意识增强了。
adj.联合的,共同的;n.关节,接合处;v.连接,贴合
  • I had a bad fall,which put my shoulder out of joint.我重重地摔了一跤,肩膀脫臼了。
  • We wrote a letter in joint names.我们联名写了封信。
n.紊乱,混乱;骚动,骚乱;疾病,失调
  • When returning back,he discovered the room to be in disorder.回家后,他发现屋子里乱七八糟。
  • It contained a vast number of letters in great disorder.里面七零八落地装着许多信件。
adj.(疾病)长期未愈的,慢性的;极坏的
  • Famine differs from chronic malnutrition.饥荒不同于慢性营养不良。
  • Chronic poisoning may lead to death from inanition.慢性中毒也可能由虚弱导致死亡。
航空公司
  • The giant jets that increasingly dominate the world's airways. 越来越称雄于世界航线的巨型喷气机。
  • At one point the company bought from Nippon Airways a 727 jet. 有一次公司从日本航空公司买了一架727型喷气机。
vi.膨胀,肿胀;增长,增强
  • The waves had taken on a deep swell.海浪汹涌。
  • His injured wrist began to swell.他那受伤的手腕开始肿了。
n.肿胀
  • Use ice to reduce the swelling. 用冰敷消肿。
  • There is a marked swelling of the lymph nodes. 淋巴结处有明显的肿块。
v.(使)变紧;(使)绷紧
  • Turn the screw to the right to tighten it.向右转动螺钉把它拧紧。
  • Some countries tighten monetary policy to avoid inflation.一些国家实行紧缩银根的货币政策,以避免通货膨胀。
adj. 黏液的,似黏液的
  • Healthy,skin,mucous membranes,and cilia are natural barriers to many viruses.健康的皮肤,粘膜和纤毛是许多病毒的天然屏障。
  • Seromucous glands contain both mucous and serous cells.浆粘液腺既含有粘液性细胞,又含有浆液性细胞。
v.喘息,发出呼哧呼哧的喘息声( wheeze的现在分词 );哮鸣
  • He was coughing and wheezing all night. 他整夜又咳嗽又喘。
  • A barrel-organ was wheezing out an old tune. 一架手摇风琴正在呼哧呼哧地奏着一首古老的曲子。 来自《现代汉英综合大词典》
adv.严格地;严厉地;非常恶劣地
  • He was severely criticized and removed from his post.他受到了严厉的批评并且被撤了职。
  • He is severely put down for his careless work.他因工作上的粗心大意而受到了严厉的批评。
adj.遗传的,遗传学的
  • It's very difficult to treat genetic diseases.遗传性疾病治疗起来很困难。
  • Each daughter cell can receive a full complement of the genetic information.每个子细胞可以收到遗传信息的一个完全补偿物。
n.[医]过敏症;[口]厌恶,反感;(对食物、花粉、虫咬等的)过敏症( allergy的名词复数 );变态反应,变应性
  • Food allergies can result in an enormous variety of different symptoms. 食物过敏会引发很多不同的症状。 来自辞典例句
  • Let us, however, examine one of the most common allergies; hayfever. 现在让我们来看看最常见的变态反应的一种--枯草热。 来自辞典例句
不纯( impurity的名词复数 ); 不洁; 淫秽; 杂质
  • A filter will remove most impurities found in water. 过滤器会滤掉水中的大部分杂质。
  • Oil is refined to remove naturally occurring impurities. 油经过提炼去除天然存在的杂质。
adj.过敏的,变态的
  • Alice is allergic to the fur of cats.艾丽斯对猫的皮毛过敏。
  • Many people are allergic to airborne pollutants such as pollen.许多人对空气传播的污染物过敏,比如花粉。
n.真菌,真菌类植物
  • Mushrooms are a type of fungus.蘑菇是一种真菌。
  • This fungus can just be detected by the unaided eye.这种真菌只用肉眼就能检查出。
n.喘息声,气喘声;v.喘息着说
  • The old man managed to wheeze out a few words.老人勉强地喘息着说出了几句话。
  • He has a slight wheeze in his chest.他呼吸时胸部发出轻微的响声。
n.(因食物、药物等而引起的)过敏症
  • He developed an allergy to pollen.他对花粉过敏。
  • The patient had an allergy to penicillin.该患者对青霉素过敏。
v.吸入( inhale的过去式和过去分词 )
  • She closed her eyes and inhaled deeply. 她合上双眼,深深吸了一口气。
  • Janet inhaled sharply when she saw him. 珍妮特看到他时猛地吸了口气。 来自《简明英汉词典》
学英语单词
above-quota purchase
alicyclic acid
amphoriscid
Araqua
artemia salinas
autesiodorum (auxerre)
authigenesis
base of neck
bottom ramming machine
burhinidaes
coarse braking
compressed air installation
context-independent
cuellar
cyberbanks
Cypridea
decision logic translator
deion extinction of arc
depreciation rate of tooling
desose
distance liner
Donzenac
dual detector
duck mold packing
eccentric type pickup
equilibrate
Eschscholtzia californica
event-by-event
exponential subroutine
export labo(u)r power
extenders
fog-navigation
geared brake motor
gebhart
genus lutras
health-consciousness
hercostomus lunlatus
heterogenous graft
Hindostan
holding braking effort
horsecrap
Hutchinson's patch
inhearing
insert film
insurance share
Kidd blood group system
Kodoris K'edi
kuvasz
lakon kabach boran (cambodia)
latent load
leaned
left divisor
liberalizers
licea kleistobolus
lot by lot
Malolo
man-millinery
mannoheptitol
master file table
mazelyn
mine accident
molybdenic acid
nanpa
nature strips
nnfa
objectives of financial statement
Ohiwa Harb.
operator trunk
Origanum dictamnus
paleoepibiotic endemism
peripheral arteriosclerosis
perosplanchnia
planchering
point softening
Pomadasyidae
poor-spirited
reference wedge
self feeding carburetor
shorthandedly
single ported slide valve
Skebobruk
soft margarine
soil metabolism
sound intermediate frequency
spillage oil
Spinacia oleracea Mill.
steel-bar header
stern ornament
stratifiable
surface recombination admittance
Surinsk
telegraaf
threepeater
tisdell
Tombila, Gunung
Trichosanthes quinquangulata
troched
v-shaped antenna
vestibular nuclei
whose'n
wolfhounds
work space layout