dirty dog

He cheated his way to the top and got caught—what a dirty dog.

他一路作弊爬到了顶端，结果被抓住了——真是个卑鄙小人。

That dirty dog spread lies about me to everyone in the office.

那个坏蛋在办公室里到处散布关于我的谎言。

I thought he was my friend, but he stole my project idea—such a dirty dog.

我以为他是我的朋友，但他偷了我的项目创意——真是个坏蛋。