“不，”小鸟说，“如果没有报酬，我不会唱第二遍。”

"Nay," said the bird, "I do not sing twice for nothing."

youdao

“不，”小鸟回答说，“如果没有报酬，我不会唱第二遍。你得给我点什么。”

"Nay," answered the bird, "I do not sing twice for nothing; you must give me something."

youdao

第二种假设似乎不太可能，因为大型翼龙不可能在不损害翅膀的情况下降落在树上。

The second hypothesis seems unlikely because large pterosaurs could not have landed in trees without damaging their wings.

youdao

That would that would give rise to a perpetual motion machine, breaking of the second law. It can't happen.

否则就会使,得永动机出现，打破第二定律那是不可能的。

麻省理工公开课 - 热力学与动力学课程节选

Last week, you'll be writing your second paper and I'd rather spend time on that than doing any outside reading.

最后一周，你们会写第二篇论文,我宁愿花时间在那上面,而不愿做一些课外阅读。

麻省理工公开课 - 电影哲学课程节选

oh, it's kind of hard to compare case 2 and 3 when we can't see it anymore.

噢，我们不太好比较第二和第三选项3,这里看不清了。

麻省理工公开课 - 化学原理课程节选