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

你之前见过这只靴子吗？

Have you ever seen this boot before?

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