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》

他们一定富得流油。

They must be stinking rich.

《牛津词典》

他们一定把我和我弟弟杰克搞混了。

They must have confused me with my brother Jack.

youdao

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

you're definitely like raised a little bit with the expectation of coming here. Like, you know,

他们会在你的成长过程中，对你来这里就读有一定的期望。比如说

我们是普林斯顿家族 - SpeakingMax英语口语达人

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