You are a lucky dog.

你真是个幸运儿.

My boss is a jolly dog.

我的老板是个风趣的家伙.

Every dog has his day.

凡人都有得意时.

David works like a dog .

大卫工作真卖劲儿.

The film must be a real dog.

这部电影一定很糟糕.

Your partner is a dirty dog.

你的合伙人是个卑鄙小人.

The poet died like a dog .

这位诗人潦倒而死.

They treated him like a dog.

他们把他看得猪狗不如.

You can't teach an old dog new tricks.

你很难改变老人的想法.

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He is really a dead dog.

他真是个没用的东西.