A：It depends on where you are and what position you are in. For instance, if you are in an elevator and you smile, you will make other takers uncomfortable.

这取决于你在哪儿以及你的处境如何。比如,如果你在一个电梯里笑容满面的，那你肯定会是其他乘客不自在。

B：That’s an exception. But I am fed up with those who keep a straight face in front of me.

这只是个例外，我烦透了在我面前板着脸的人。

A：I cannot see eye to eye with you here. You see, I am fed up with those who keep smiling to me. I mean, they smile for no reason at all.

我和你的看法不同，我讨厌始终对我微笑的人。我的意思是说，他们没有缘由地微笑。

B：That means you don’t like them. If you hit it off with them, you will like to see their smiles.

那就是说你不喜欢他们。如果你和他们合得来，你会喜欢他们的微笑的。