You are lost. You're in a new city and you're lost and you don't know where you're going.

你迷路了。你刚到一个城市，没法找到方向。你不知道你该怎么走。

How long课堂 - SpeakingMax英语口语达人

It would be much better if you had a reference point that didn't care where the pressure was.

我们还需要精确地定义气压,你必须知道气压的大小,当然如果我们能找到一个。

麻省理工公开课 - 热力学与动力学课程节选

Well, I solve 2 or 3 exponential problems before breakfast every day. You know things like, how to find my way to the bathroom is inherently exponential, but I manage to solve it anyway.

你要知道如何找到,我的浴室就是一个，固有的指数型问题,但是我还是能解决它。

麻省理工公开课 - 计算机科学及编程导论课程节选