火车司机：如果没有时刻表，怎么能知道晚点呢？

Railroad driver: Well, how would we know they were late, if we didn't have a schedule?

youdao

如果您没有时间，那是你优先考虑的事情出了问题。

If you do not have time, your priorities are out of whack.

youdao

如果你还有时间，就把所有的东西都检查一遍，确保你没有犯任何粗心的错误。

If you have time left, go over everything to make sure you haven't made any careless mistakes.

youdao

And if we have time today, we'll start in on the photo-electron spectroscopy, if not, that's where we'll start when we come back on Wednesday.

而且如果我们今天还有时间，我们将会开始光电子频谱，如果没有,我们将会在下周三回来时开始。

麻省理工公开课 - 化学原理课程节选

But if you've not separated yourself from the body while in life, if you're too enmeshed in its concerns, then upon the death of your body your soul will get sucked back in, reincarnated perhaps, in another body.

但假如你没有,在活着时让心灵从身体中抽离,如果你太过于陷入身体的渴求,在你死后,你的灵魂会被吸回这个世界上,可能会转世,进入另一个肉体

耶鲁公开课 - 死亡课程节选

If a tumor starts to grow and it doesn't develop a vascular supply it doesn't develop blood vessels in it, then it can't get bigger than a certain size and there's lots of evidence from many cancers showing that this is true.

如果肿瘤生长时,没有形成新的血管以维持供血,肿瘤内部也没有血管的话,它的大小将非常有限,这一结论已有许多科学成果可以证明

耶鲁公开课 - 生物医学工程探索课程节选