在了解你之前，动物总是这样的。

Creatures were always like that until they found out about you.

youdao

你之前曾听过迪斯尼乐园吗？

Have you ever heard of Disneyland before?

youdao

在我打扁你之前快给我滚。

Go away before I really hit you.

youdao

And if you noticed earlier that these are what we'd call powers of ten, these are just powers of two.

四位，八位吗？,如果你想想之前学习的十的次方，这些就是二的次方。

哈佛公开课 - 计算机科学课程节选

One situation is when you're speaking with a friend who had given you really good advice that you failed to take.

一种情况是，当你正在和一个朋友交谈，他之前曾给你一些很好的建议，但你却没有采纳。

I should have 课堂 - SpeakingMax英语口语达人

Americans look at it as a problem, because we are losing jobs too like you mentioned, Indian engineers, software engineers.

美国将其视为一个问题，因为像你之前提到的,很多人都失业了，印度工程师，软件工程师之类的。

普林斯顿公开课 - 国际座谈会课程节选