你一定知道吻是什么吧？

Surely you know what a kiss is?

youdao

你一定知道，在这场淹没了我的小船的风暴中，一艘大船也遭受了同样的命运。

You must know that, in the storm which swamped my boat, a large ship also suffered the same fate.

youdao

你知道，要进入这个小组是很困难的，自从我还在学校的时候算起，我一定已经试镜过大概十次了。

You know, it is so hard to get into this group, I must have auditioned like ten times since I have been at the school.

youdao

So, that is a tricky problem to begin with because if you take this formula here, it tells you y if you know t, but no, we're not saying that.

以这个问题刚开始的时候有点难度,因为如果你要用这个公式,求y的时候就一定要知道t,但是,我们不知道

耶鲁公开课 - 基础物理课程节选