Keep that in mind.

记住那件事。

It's hard to say.

难说。

You're wasting you breath.

你在白费口舌。

I feel much better now.

我感觉好多了。

He could always come up with a reason for them to linger another month.

他总能想出个理由来让他们再耽误上一个月。

I can't believe his story.

我无法相信他的说法。