(as) sick as a dog

病得很重；嘔吐得非常厲害。

例句：

• We've never been so ill. The whole family was sick as dogs. (我們從未生過這麼重的病。全家都病得很重)
• Sam was as sick as a dog and couldn't go to the party. (山姆病得很重，無法參加派對)

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