Good blood, bad blood is both blood.

好的血、坏的血都是血。

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There is, it seems, some bad blood between Mills and the Baldwins.

米尔和鲍德温两家看上去好像有积怨。

《柯林斯英汉双解大词典》

We usually solve these problems too, but the solution can involve bad blood for months at a time.

我们也能解决这些问题，但是解决方案会使人在一段时间内产生厌恶感。

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