I don't buy your story. 我不相信你.
原意: I don't believe you.
Let's call it quits. 算了吧!
原意: Let's forget it.
His words carry a lot of weight. 他的话很有分量.
原意: He is very influential.
He is trying to cash in on me. 他想占我便宜.
原意: He is trying to take advantage from me.