Given that there is a living to be made at night, and given that alternative daytime trades are thoroughly occupied, natural selection has favoured bats that make a go of the night-hunting trade.
考虑到夜晚也可以生存,并且可供选择的白天的“交易”完全被占用,它们自然选择偏爱那些成功在夜间进行捕食“交易”的蝙蝠。
The youngest, Bradley, 22, has a year to go at the University of Vermont.
最小的弟弟布拉德利,22岁,在佛蒙特大学,还有一年毕业。
If a child has to have a shunt or has seizures, their risk for long-term problems go up, as do those children who have an infection of the brain at any point in time.
如果孩子必须有一个分流或有癫痫,其存在长期问题的风险变大,就像那些不论何时患有脑部感染的孩子一样。
Woods has been in treatment at a sex addiction facility in Mississippi and plans to go back to resolve his personal problems.
VOA: standard.2010.02.19
The moon god has to come up at night and hang around for a while And go back down.
月神每晚都得出来,并且在天空悬一会儿,然后才能回去。
Now, let's go back to a theory which has at least got the virtue of being very old, although hardly anybody believes it anymore.
现在,让我们再回去看一个理论,它的优势在于非常古老,虽然已经没人再相信它
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