SSS 2010-12-27
时间：2018-12-02 作者：英语课 分类：Scientific American(十二)月
This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute?
As a bitter winter storm rages on the east coast, it's hard to knock being warm-blooded. But what about the metabolic 1 cost of maintaining a high body-temperature? Well, a new study finds that we and many other mammals keep up such a torrid temp because it's a Goldilocks situation—98.6 is just right.
Albert Einstein College of Medicine researchers previously 2 showed that every one degree Celsius 3 rise in body temperature wards 4 off about 6 percent more fungal species. So tens of thousands of fungi 5 can infect reptiles 6 and amphibians 7, but we can only be invaded by a few hundred fungi.
In the new work, the researchers created a mathematical model that weighed the fungal protection benefits versus 8 the metabolic cost of high body-temperature. And the optimal 9 temperature was 98.1, quite close to what evolution figured out. The research was published in the open-access journal mBio.
Too low a temperature and we're far more susceptible 10 to fungal infections. Too high a temperature and we'd spend all our time taking in fuel to burn. So 98.6, like that middle bowl of porridge, is just right.
Thanks for the minute. For Scientific American's 60-Second Science, I'm Steve Mirsky.
- Impressive metabolic alternations have been undergone during embryogenesis.在胚胎发生期间经历了深刻的代谢变化。
- A number of intoxicants are associated with metabolic acidosis.许多毒性物质可引起代谢性酸中毒。
- The bicycle tyre blew out at a previously damaged point.自行车胎在以前损坏过的地方又爆开了。
- Let me digress for a moment and explain what had happened previously.让我岔开一会儿，解释原先发生了什么。
- 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。
- This hospital has 20 medical [surgical] wards. 这所医院有 20 个内科[外科]病房。
- It was a big constituency divided into three wards. 这是一个大选区，下设三个分区。
- Students practice to apply the study of genetics to multicellular plants and fungi.学生们练习把基因学应用到多细胞植物和真菌中。
- The lawn was covered with fungi.草地上到处都是蘑菇。
- Snakes and crocodiles are both reptiles. 蛇和鳄鱼都是爬行动物。 来自《简明英汉词典》
- Birds, reptiles and insects come from eggs. 鸟类、爬虫及昆虫是卵生的。 来自《现代汉英综合大词典》
- The skin of amphibians is permeable to water. 两栖动物的皮肤是透水的。
- Two amphibians ferry them out over the sands. 两辆水陆两用车把他们渡过沙滩。
- The big match tonight is England versus Spain.今晚的大赛是英格兰对西班牙。
- The most exciting game was Harvard versus Yale.最富紧张刺激的球赛是哈佛队对耶鲁队。
- What is the optimal mix of private and public property rights in natural resources?私人和国家的自然资源产权的最适宜的组合是什么？
- Optimal path planning is a key link for the sailing contest.帆船最优行驶路径规划是帆船比赛取胜的关键环节。
- Children are more susceptible than adults.孩子比成人易受感动。
- We are all susceptible to advertising.我们都易受广告的影响。