betrayer

After months of secrets, the group discovered that the betrayer was sitting among them.

经过几个月的保密，这个组织发现背叛者就在他们中间。

用法提示：betrayer 是名词，指背叛者；这里作从句的主语。

He refused to reveal his source, claiming he was no betrayer.

他拒绝透露消息来源，声称自己不是背叛者。

用法提示：betrayer 是名词，指告密者；这里作表语。

The movie tells the story of a betrayer who destroyed a powerful family.

这部电影讲述了一个背叛者摧毁一个有权势家族的故事。

用法提示：betrayer 是名词，指背叛者；这里作介词 of 的宾语。