This mechanism probably evolved to make sure starving mammals don\\\\\\\'t go to sleep when they should be foraging for food.

这种机制可能是为了确保饥饿的哺乳动物不要在该去觅食的时候沉沉睡去。

youdao

I duppose when their feathers and wings are fully grown , and they don ’ t need the constant care of their parents .

我猜要到他们的羽毛和翅膀完全长成，他们就不需要总是靠父母照顾了。

youdao

The network delivers them to your machine only when you need them; because the applets are so much smaller than conventional programs, they don''t take forever to download.

只有当你需要这种应用程序时，网络才把它们送到你的机器上；由于小应用程序比常规程序小得多，故下载不需很多时间。

youdao

"People don't tend to go out and eat a lot when they don't have a lot of money.

VOA: standard.2010.03.18

Any thoughts? Don't you hate professors who stand here waiting for you to answer, even when they have candy?

你们难道不讨厌站在那儿等你回答问题,的教授么？虽然他有糖果做奖品哦，用少于线性时间完成可能么？

麻省理工公开课 - 计算机科学及编程导论课程节选

I've passed through Grand Central Station when filming was happening. I don't know what they were filming though.

有一次我从那儿经过，正好有部电影在拍。但我不知道他们在拍什么电影。

电影里的中央车站 - SpeakingMax英语口语达人

"There is real impact for individuals when they don't know how their information is being collected and when it is being shared in ways they don't want, " said Nicole Ozer, a policy director at the American Civil Liberties Union of California, which co-sponsored the bill.

WSJ: Online-Data Bill Sets Up Privacy Fight

You've got to get to know them and some don't like it when they don't get selected but we have to manage the season.

BBC: Glasgow hope energy of youth can replace injured stars

They can't be praised to the skies when they do well and then expect nobody to say anything when they don't deliver.

BBC: SPORT | Football | World Cup 2006 | Teams | England | Terry Butcher's view on England