是不是
conj. whether
misc. yes or no ; whether or not ; if ... or not ; Is it right? ; Is it?
双语例句原声例句
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这地毯很耐用，是不是？
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真是令人惊叹，是不是？
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葆拉是个活宝，是不是？
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I'm not at all sure there's anything more to be said about that passage, which I think lays it to rest.
我不确定这篇文章是不是,还要更多的讲解，就这样的吧。
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Isn't it difficult being a mother and a professor at the same time and keeping a balance between the two?
同时做母亲和教授是不是很困难呢？两者之间取得平衡不容易吧？
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So, that's a homogeneous system, one phase. You have to know if your system is an equilibrium system or not.
所以这是个均匀系统，只有一个相，你得知道你的系统,是不是个平衡系统。
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