寒冷对身体的影响

时间:2023-01-29 06:10:58

(单词翻译:单击)

天冷会影响我们的身体。寒冷的天气会对我们造成哪些影响?在什么温度下,它会开始影响我们的身体?
 
When we think of low temperature as a danger, we often imagine people working outside in polar regions in the depths of winter or in cold storage facilities, layered in thermal1 clothing to help them deal with freezing temperatures. But do we also need to protect ourselves when it's just a bit chilly2 as well as in arctic conditions?
 
As mammals, our bodies have to maintain an internal temperature in a narrow range between 37 and 37.5C. If that temperature drops, the effects can be serious. Below 35C, people can develop hypothermia, with symptoms such as shivering, confusion, and slurred3 speech. If body temperature drops below 29C, it can lead to loss of consciousness. Fortunately our bodies can regulate their internal temperature, but there are some negative side effects which come with this process.
 
Ten degrees Celsius4 is hardly biting cold, but that's the temperature that BBC journalist James Gallagher was made to endure in an experiment at the University of South Wales. As the test room was cooled from 21 degrees, his blood pressure, heart rate and breathing rate all increased, while the flow of blood to his brain decreased by 20%. What are the consequences of this? Immediately, it meant that Gallagher took longer to solve some simple puzzles. As a longer-term risk, Professor Damian Bailey points out that increased blood pressure puts us at greater risk of stroke and heart attacks.
 
Professor Bailey suggests that in the cold, people should wear clothing that provides good insulation5, eat more carbohydrates6, and be more active. Another approach is suggested by Professor Christopher Minson. He believes that people are too reliant on being able to control the temperature around them, and that we can gradually train ourselves to cope with a lack of warmth and be comfortable at lower temperatures. So, while moderately low temperatures can have an effect on us, there are steps we can take to cope with them.

分享到:


点击收听单词发音收听单词发音  

1 thermal 8Guyc     
adj.热的,由热造成的;保暖的
参考例句:
  • They will build another thermal power station.他们要另外建一座热能发电站。
  • Volcanic activity has created thermal springs and boiling mud pools.火山活动产生了温泉和沸腾的泥浆池。
2 chilly pOfzl     
adj.凉快的,寒冷的
参考例句:
  • I feel chilly without a coat.我由于没有穿大衣而感到凉飕飕的。
  • I grew chilly when the fire went out.炉火熄灭后,寒气逼人。
3 slurred 01a941e4c7d84b2a714a07ccb7ad1430     
含糊地说出( slur的过去式和过去分词 ); 含糊地发…的声; 侮辱; 连唱
参考例句:
  • She had drunk too much and her speech was slurred. 她喝得太多了,话都说不利索了。
  • You could tell from his slurred speech that he was drunk. 从他那含糊不清的话语中你就知道他喝醉了。
4 Celsius AXRzl     
adj.摄氏温度计的,摄氏的
参考例句:
  • 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。
5 insulation Q5Jxt     
n.隔离;绝缘;隔热
参考例句:
  • Please examine the insulation of the electric wires in my house.请检查一下我屋子里电线的绝缘情况。
  • It is always difficult to assure good insulation between the electric leads.要保证两个电触头之间有良好的绝缘总是很困难的。
6 carbohydrates 001f0186d1ea717492c413ca718f2635     
n.碳水化合物,糖类( carbohydrate的名词复数 );淀粉质或糖类食物
参考例句:
  • The plant uses the carbohydrates to make cellulose. 植物用碳水化合物制造纤维素。 来自《简明英汉词典》
  • All carbohydrates originate from plants. 所有的碳水化合物均来自植物。 来自辞典例句

©2005-2010英文阅读网