时间:2019-02-08 作者:英语课 分类:阅读空间


英语课

8 Health Problems You May Encounter With Your Laptop and How to Solve Them


 Laptops due to their lightness, mobility 1 and new facilities like WiFi, which allow people to use internet almost everywhere, have become an integral part of many people's life especially youngsters. Everyone will agree that there is no harm in having a laptop. But the problem is that people strain their eyes in very unhealthy and unsuitable postures 3 for long hours. Youngsters use most of their leisure time on their laptops watching movies, surfing or even working.


Posture 2 is not the only problem with the use of laptops. High performance laptops, which are more and more available on the market, seduce 4 everyone. Nevertheless, they generate much more heat than the usual desktop 5 computer.
   1. Laptops and children
      Problem: The BBC is reporting that laptop with WiFi antennas 7 should not be placed near the laps of children until the research on health problems caused by them become clearer. Such antennas are similar to mobile phone antennas, except that they are less powerful. Prof Challis pointed 8 that children are more sensitive to UV than an adult. He noted 9 that since children are not allowed to use mobile phones for their own safety, the same applies for laptops.
      Solution: Children can use desktop computers since the emissions 10 from the antenna 6 will affect them less as they are situated 11 in the tower which is further from their lap.
   2. Laptops and infertility 12
      Problem: It is known among researchers that a rise in temperature by 1 degree Celsius 13 in the sac surrounding the testicles, known as the scrotum, leads to a decrease of synthesis of normal healthy sperm 14 by 40%. A study carried out by a group of researchers from the State University of New York at Stony 15 Brook 16 revealed that for a person who uses his laptop on the laps, the median temperature rise in the scrotum is around 2.6 to 2.8 degrees Celsius.
      Further research is needed to find if there is a correlation 17 between infertility and using a laptop on the lap. But there is surely a decrease in the number of normal sperm cells or sperm count.
      Solution: Place the laptop on a surface instead of your lap when you are using it. Or you can buy stands for laptop.
   3. Laptops and burns
      Problem: The heat from the laptop on the lap also causes skin and groin burns. To protect themselves from burns, certain people place a pillow between their lap and laptop. This can turn out to be more dangerous as the air vent 18 of the laptop are blocked. The fans work faster but only to circulate a heated air that cannot escape. There are high risks that your laptop plastic back cover melts and causes more serious burns.
      Solution: Firms are designing very comfortable and safe lap rests for your laptops. They can be searched through the internet.
   4. Laptops and wrist pains
      Problem: Excessive typing causes the wrist to press against the edge of the laptop's border which is sharp in certain models. This causes compression of nerves and blood vessels 19 leading to wrist and finger pains due to insufficient 20 circulation of blood to the extremities 21 of the hand.
      Solution: Simple flexions and extensions of the wrist and fingers must be done frequently to promote blood circulation.
   5. Laptops associated to shoulder and neck pains
      Problem: Laptop keyboards lack inclinations 22 and proper hand rests. The elbow remains 23 suspended in the air, thus causing contraction 24 on the muscles of the shoulders and that of the neck. Prolonged use leads to shoulder and neck pains.
      Solution: The best solution to this problem is getting back to the ancient more ergonomic external keyboard connected to the laptop.
   6. Problem: Often the height of the screen is not ergonomic. The muscles of the back and the neck are used to have a better view of the screen display.
      Solution: The laptop can be placed on a support which permits us to see the whole content of the screen extend and stretch the neck muscles.
   7. Laptops and the eyes
      Problem: The eyes need rests and the lenses inside them have to relax after stretching. When using laptops or computers in general, the muscles that control the lenses remain in a static position depending on the number of hours you stare at the screen.
      Solution: To protect the eyes from strains, frequent poses are recommended. It is advisable to watch distant objects so as to allow the muscles to relax.
   8. Problem: The brightness of the screen is also important. Too much brightness or light from another source reflecting on the screen into your eyes can be harmful to the retina. The retina is a collection of light sensitive cells that collects information and sends them to the brain to be processed into vision.
      Solution: To avoid this, choose a suitable brightness as well as switching on the lights to dampen the amount of light from the laptop screen.
Laptops in no case will harm us if used correctly. We just need to control the amount of hours we spend in front of it and respect the body postures and constraints 25.

n.可动性,变动性,情感不定
  • The difference in regional house prices acts as an obstacle to mobility of labour.不同地区房价的差异阻碍了劳动力的流动。
  • Mobility is very important in guerrilla warfare.机动性在游击战中至关重要。
n.姿势,姿态,心态,态度;v.作出某种姿势
  • The government adopted an uncompromising posture on the issue of independence.政府在独立这一问题上采取了毫不妥协的态度。
  • He tore off his coat and assumed a fighting posture.他脱掉上衣,摆出一副打架的架势。
姿势( posture的名词复数 ); 看法; 态度; 立场
  • Modern consciousness has this great need to explode its own postures. 现代意识很有这种摧毁本身姿态的需要。
  • They instinctively gathered themselves into more tidy postures. 她们本能地恢复了端庄的姿态。
vt.勾引,诱奸,诱惑,引诱
  • She has set out to seduce Stephen.她已经开始勾引斯蒂芬了。
  • Clever advertising would seduce more people into smoking.巧妙策划的广告会引诱更多的人吸烟。
n.桌面管理系统程序;台式
  • My computer is a desktop computer of excellent quality.我的计算机是品质卓越的台式计算机。
  • Do you know which one is better,a laptop or a desktop?你知道哪一种更好,笔记本还是台式机?
n.触角,触须;天线
  • The workman fixed the antenna to the roof of the house.工人把天线固定在房顶上。
  • In our village, there is an antenna on every roof for receiving TV signals.在我们村里,每家房顶上都有天线接收电视信号。
[生] 触角,触须(antenna的复数形式)
  • Marconi tied several antennas to kites. 马可尼在风筝上系了几根天线。 来自超越目标英语 第3册
  • Radio astronomy today is armed with the largest antennas in the world. 射电天文学拥有世界上最大的天线。
adj.尖的,直截了当的
  • He gave me a very sharp pointed pencil.他给我一支削得非常尖的铅笔。
  • She wished to show Mrs.John Dashwood by this pointed invitation to her brother.她想通过对达茨伍德夫人提出直截了当的邀请向她的哥哥表示出来。
adj.著名的,知名的
  • The local hotel is noted for its good table.当地的那家酒店以餐食精美而著称。
  • Jim is noted for arriving late for work.吉姆上班迟到出了名。
排放物( emission的名词复数 ); 散发物(尤指气体)
  • Most scientists accept that climate change is linked to carbon emissions. 大多数科学家都相信气候变化与排放的含碳气体有关。
  • Dangerous emissions radiate from plutonium. 危险的辐射物从钚放散出来。
adj.坐落在...的,处于某种境地的
  • The village is situated at the margin of a forest.村子位于森林的边缘。
  • She is awkwardly situated.她的处境困难。
n.不肥沃,不毛;不育
  • It is the Geneva, Switzerland-based Biotech Company's second recombinant infertility drug. 它是瑞士生物技术公司在日内瓦的公司生产的第二种重组治疗不孕症的药。 来自英汉非文学 - 生命科学 - 生物技术制药疫苗
  • Endometritis is a cause of infertility. 子宫内膜炎是不育的原子。 来自辞典例句
adj.摄氏温度计的,摄氏的
  • The temperature tonight will fall to seven degrees Celsius.今晚气温将下降到七摄氏度。
  • The maximum temperature in July may be 36 degrees Celsius.七月份最高温度可能达到36摄氏度。
n.精子,精液
  • Only one sperm fertilises an egg.只有一个精子使卵子受精。
  • In human reproduction,one female egg is usually fertilized by one sperm.在人体生殖过程中,一个精子使一个卵子受精。
adj.石头的,多石头的,冷酷的,无情的
  • The ground is too dry and stony.这块地太干,而且布满了石头。
  • He listened to her story with a stony expression.他带着冷漠的表情听她讲经历。
n.小河,溪;v.忍受,容让
  • In our room we could hear the murmur of a distant brook.在我们房间能听到远处小溪汩汩的流水声。
  • The brook trickled through the valley.小溪涓涓流过峡谷。
n.相互关系,相关,关连
  • The second group of measurements had a high correlation with the first.第二组测量数据与第一组高度相关。
  • A high correlation exists in America between education and economic position.教育和经济地位在美国有极密切的关系。
n.通风口,排放口;开衩;vt.表达,发泄
  • He gave vent to his anger by swearing loudly.他高声咒骂以发泄他的愤怒。
  • When the vent became plugged,the engine would stop.当通风口被堵塞时,发动机就会停转。
n.血管( vessel的名词复数 );船;容器;(具有特殊品质或接受特殊品质的)人
  • The river is navigable by vessels of up to 90 tons. 90 吨以下的船只可以从这条河通过。 来自《简明英汉词典》
  • All modern vessels of any size are fitted with radar installations. 所有现代化船只都有雷达装置。 来自《现代汉英综合大词典》
adj.(for,of)不足的,不够的
  • There was insufficient evidence to convict him.没有足够证据给他定罪。
  • In their day scientific knowledge was insufficient to settle the matter.在他们的时代,科学知识还不能足以解决这些问题。
n.端点( extremity的名词复数 );尽头;手和足;极窘迫的境地
  • She was most noticeable, I thought, in respect of her extremities. 我觉得她那副穷极可怜的样子实在太惹人注目。 来自辞典例句
  • Winters may be quite cool at the northwestern extremities. 西北边区的冬天也可能会相当凉。 来自辞典例句
倾向( inclination的名词复数 ); 倾斜; 爱好; 斜坡
  • She has artistic inclinations. 她有艺术爱好。
  • I've no inclinations towards life as a doctor. 我的志趣不是行医。
n.剩余物,残留物;遗体,遗迹
  • He ate the remains of food hungrily.他狼吞虎咽地吃剩余的食物。
  • The remains of the meal were fed to the dog.残羹剩饭喂狗了。
n.缩略词,缩写式,害病
  • The contraction of this muscle raises the lower arm.肌肉的收缩使前臂抬起。
  • The forces of expansion are balanced by forces of contraction.扩张力和收缩力相互平衡。
强制( constraint的名词复数 ); 限制; 约束
  • Data and constraints can easily be changed to test theories. 信息库中的数据和限制条件可以轻易地改变以检验假设。 来自英汉非文学 - 科学史
  • What are the constraints that each of these imply for any design? 这每种产品的要求和约束对于设计意味着什么? 来自About Face 3交互设计精髓
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