大气自净作用

Without air, there would be no fire. There would be no cars or trucks, since motors need air in order to work. Without air, there would be no wind or clouds. There would be no weather, as we know it.(

发表于:2018-12-01 / 阅读(382) / 评论(0) 分类 自考英语(一)78讲

Life Is A Test 人生是一场考试 It makes for a lot of stress, and we tend to feel that there will be more hard lessons in life。 这是个让人充满压力的比喻,我们时常感觉人生就是一个不断面临各种课题的过程。 Lif

发表于:2018-12-18 / 阅读(173) / 评论(0) 分类 英语美文

This is the VOA Special English Development Report. The lack of clean drinking water is a major problem worldwide. The World Health Organization says more than one billion people live in areas where renewable water resources are not available. The pr

发表于:2019-01-12 / 阅读(178) / 评论(0) 分类 2010年VOA慢速英语(四)月

This is the VOA Special English Health Report. An outbreak of cholera in Haiti continues to spread sickness and worry. Health officials are worried that the capital could suffer a major outbreak of the disease. So far most cases in Port-au-Prince hav

发表于:2019-01-12 / 阅读(192) / 评论(0) 分类 2010年VOA慢速英语(十一)月

By Paul Sisco Washington, DC 26 July 2006 watch Water Purification report Villagers in Iraq are better off today, thanks in part to NASA engineers from the Marshall Space Center in America's deep south. ------- Concern for Kids is a non-profit organ

发表于:2019-01-12 / 阅读(222) / 评论(0) 分类 2006年VOA标准英语(七月)

Students Invent Water Purification Disc The lab operates like a kitchen. They add several ingredients. Then they mix, weigh, press and bake them. What's created is called a MadiDrop - a ceramic disc infused with silver. When dropped in water, silver

发表于:2019-01-14 / 阅读(186) / 评论(0) 分类 VOA标准英语2013年(六月)

12The Lord said to Moses, 2Say to the Israelites: 'A woman who becomes pregnant and gives birth to a son will be ceremonially unclean for seven days, just as she is unclean during her monthly period. 3On the eighth day the boy is to be circumcised. 4

发表于:2019-01-26 / 阅读(244) / 评论(0) 分类 利未记

According to the latest research, vehicles, coal-burning, airborne dust and industrial production account for 85 to 90-percent of the major airborne pollution sources in most Chinese cities. Vehicles are the biggest polluters in Beijing, Hangzhou, Gu

发表于:2019-02-03 / 阅读(195) / 评论(0) 分类 英语新闻

By Paige Kollock Washington, DC 12 May 2006 watch Sustainability Expo report More than 350 students from 21 colleges and universities were on the National Mall in Washington D.C. this week to compete

发表于:2019-02-05 / 阅读(241) / 评论(0) 分类 2006年VOA标准英语(五月)

Katia: So, Enam, let's talk about environmental problems of our countries. In Bangladesh, what is an environmental problem? Enam: Actually, we have a lot of environmental problems in Bangladesh but mainly I'd say the soil contamination is quite bad,

发表于:2019-02-05 / 阅读(200) / 评论(0) 分类 原版英语对话1000个

WASHINGTON, June 23 (Xinhua) -- Last month was the hottest May since record keeping began in 1880, the U.S. National Oceanic and Atmospheric Administration (NOAA) said Monday. 图片1 The combined average temperature over global land and ocean surfac

发表于:2019-02-06 / 阅读(218) / 评论(0) 分类 英语新闻

New research suggests agriculture has greatly increased the amount of dust blowing off of West Africa, the world's largest source of atmospheric dust, and may have been one factor driving the decrease in rainfall in the region over the past several c

发表于:2019-02-07 / 阅读(298) / 评论(0) 分类 VOA标准英语2010年(七)月

WASHINGTON Folks sweating out the heat wave battering parts of the country may just have to get used to it. 美联社华盛顿 2010年7月8日消息:那些在肆虐美国部分地区的热浪中汗流浃背的人们也许只好逐渐适应这种天气

发表于:2019-02-07 / 阅读(208) / 评论(0) 分类 阅读空间

A diamond worth ?12,000 was shot into space this morning - and whoever finds it when it lands back on earth gets to keep it. 今天早晨一颗价值1万2千英镑的钻石被送入太空,在它落地后,谁能找到它,它就归谁。 A diamon

发表于:2019-02-08 / 阅读(246) / 评论(0) 分类 英语新闻

A alternate bearing 大小年结果 amendment 调理剂 ample 充足的 anatomical 解剖的 aneuploid 非整倍性(的) anion 阴离子 annual 一年生植物,一季生植物 anther 花粉囊,花药 anthocyanin [植]炭疽病 antibiotic 抗生

发表于:2019-02-09 / 阅读(335) / 评论(0) 分类 英文语法词汇

Katia: So, Enam, let's talk about environmental problems of our countries. In Bangladesh, what is an environmental problem? Enam: Actually, we have a lot of environmental problems in Bangladesh but mainly I'd say the soil contamination is quite bad,

发表于:2019-02-16 / 阅读(176) / 评论(0) 分类 英语趣味课堂

Nearly 230,000 people affected by the earthquake in Yunnan have been relocated to safer areas. Longtoushan County is the worst-hit area. Two relocation sites were established there to accommodate victims. Works are now underway to repair dozens of wa

发表于:2019-02-18 / 阅读(215) / 评论(0) 分类 CCTV9英语新闻2014年08月

Science and technology 科学技术 Measurement 测量 Mass effect 质量效应 A better way to clean the world's one true kilogram 清洁世界上真正一千克的更好方法 IN SEVRES, on the outskirts of Paris, sealed beneath a triplet of bell j

发表于:2019-02-24 / 阅读(259) / 评论(0) 分类 经济学人科技系列

一台类似于公交站的城市空气净化装置,近日正式落户于清华大学,其将作为清华校车车站之一,接受北京空气的测试。 请看相关报道: An outdoor air purification system, an oxygen bar designed in the fo

发表于:2019-02-25 / 阅读(235) / 评论(0) 分类 英文语法词汇

Science and technology. 科技。 Geoengineering. 地理工程学。 Implicit promises. 包含着承诺。 A geoengineering experiment has come unstuck. But there will be more. 地理工程试验取得突破。可期待更多。 FOR the past few year

发表于:2019-02-26 / 阅读(253) / 评论(0) 分类 经济学人综合
学英语单词
Aboundji
abyssobenthic
acer pauciflorum fang
acquired taste
aircraft log
Ananas sativus
Andaman and Nicobar Islands
arginosuccinates
arrivals lounge
asterisk picture
auxiliary compartment
Bacaeroides melaninogenicus
backgrounds
bbbb
Bill of Lading Conventions
broth of a boy
byte per second
capitophorus montanus
control relationship
coupling charging
crumpled
discrete wire technology
dolgikh
dolichocrany
downtalk
drugheads
dtb
eight-channel recording paper
Encinas de Abajo
epedermic cryptococcosis
farfuraceous
film-stress interferometer
four-course system
fuel desulfurization
gas trunking
handsfree
hemiphaedusa kanaganensis
hemoglobin coefficient
hibiscus trionums
homogonic life cycle
Hydrochol
IMDSC
instant centre
intracranial pneumatocele
johnstonotite
juniper camphor
leben milk
looms ahead
lymphadenoma
mad for
mellisugous
mind-body problem
Minnewaukan
Moncrabeau
multi-input-multi-output
multitask link control
negative yawing moment
nipponotrophon echinus echinus
nodular glanders
Omaja
omnibi
once-impoverished
outpricing
overwatched
papion
passalurus ambiguus
post elastic behavior
predicate calculus language
print glazer
professional judgement
pulchella
quaker-oats look
readathons
reference sonde
retinotopically
Ruhstahl-Hausen vacuum degassing process
sagger
scalarian
self-executing treaty
serated
serpent-eater
shipborne magnetic survey
Sinp'yǒng-gun
sludge density index
sodium carbonate bead test
Soult
Spatoglossum
splash proof type
submixing
supertemporal
supplies contract
syllogise
table-footballs
Tar's symptom
the commonwealth of australia
trueheart
tubular scaffold
V-tool
Villaconejos
web member
xbow