他们一定已经知道他们的父亲在暗地里做什么。

They must have known what their father was up to.

《柯林斯英汉双解大词典》

他们双方都有一定的道理。

They both had some right on their side.

《牛津词典》

为了解释这一点，他们假定银河系一定包含了大量无法探测到的不明物质。

To explain this, they hypothesize that galaxies must contain a great deal of missing matter which cannot be detected.

《柯林斯英汉双解大词典》

It's a scheme that in English counts accents or stresses per line and then arranges them in a pattern.

这种体系里的英文诗每行都有重读,然后将他们按一定模式排列。

耶鲁公开课 - 现代诗歌课程节选

People tend to think, because the computer says it's so, it must be so. That the computer is- speaks for God. And therefore it's infallible.

那么一定就是这么回事了,他们认为计算机代表着神一样的存在-,因此是不可能犯错的。

麻省理工公开课 - 计算机科学及编程导论课程节选

And to the extent that they help make markets efficient, I do think they help the world. I do sort of agree.

而且一定程度上，他们使市场更有效，我的确认为他们帮助了这个世界，我的确是同意的。

耶鲁公开课 - 金融市场课程节选