SSS 2012-06-13
时间：2019-01-08 作者：英语课 分类：Scientific American(六)月
After a hurricane or earthquake, people often band together and cooperate to deal with the recovery. And we’re not the only species that becomes more cooperative in tough times.Female Yuhina birds in Taiwan usually fight over space in the community nest when they’re trying to lay eggs. But in bad weather the birds tend to leave each other alone.The finding is in the journal Nature Communications. Researchers monitored groups of yuhinas for several years, in fair and foul 1 weather. When the scientists combined their data with a game-theory model, they found that periods of fighting between female yuhinas were 50-percent shorter when the weather was bad—which increased the overall success of the breeding group.During times of heavy rain, food becomes scarce. And getting wet means that the birds have to expend 2 more energy to stay warm. So the birds apparently 3 institute a truce 4, which cuts down on energy wasted fighting, and increases everyone's chance of survival. In other words, in bad weather birds of a feather stick together.
- Take off those foul clothes and let me wash them.脱下那些脏衣服让我洗一洗。
- What a foul day it is!多么恶劣的天气！
- Don't expend all your time on such a useless job.不要把时间消耗在这种无用的工作上。
- They expend all their strength in trying to climb out.他们费尽全力想爬出来。
- An apparently blind alley leads suddenly into an open space.山穷水尽，豁然开朗。
- He was apparently much surprised at the news.他对那个消息显然感到十分惊异。