To describe a person's serious illness, they say "sick as a dog".

为了形容一个人的严重疾病，他们说“病得像条狗一样”。

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Peter sprang erect, as wide awake at once as a dog, and with one warning cry, he roused the others.

彼得跳了起来，像只狗一样，一下子就清醒了，他发出一声警告的叫声，把其他人都吵醒了。

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"Or maybe it was only as big as a dog," Franz said.

“或者可能跟一只狗的大小差不多。”弗朗茨又说。

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Jim stopped inside the door, as immovable as a dog smelling a bird.

VOA: special.2010.12.25

So in those circumstances, I'm an advocate of active euthanasia. I think it is just as if you have a dog who was dying from some disease, you wouldn't say, well we just let nature take its call.

所以这种情况下，我通常会,支持安乐死，我认为,这就像是你的狗得了病,马上就要死了，你不会说，嗯，我们顺其自然吧。

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You might choose to use a word for "Dog" as "Woof woof" because it sounds like a dog but you can't use a word for "Country" that sounds like a country.

你可以用"汪汪"这个词来表示"狗",因为它听起来像只狗,但你却无法使用一个听起来像国家的词,来表示"国家"

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"As a dog lover I am very unhappy with the outcome of this case, " he tweeted.

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If you develop a reputation as a dog before your career even begins, that leaves you, well, in the doghouse.

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No one who truly lived by it and all its implications could earn a living as a dog catcher, much less a businessman.

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