尽管已经达成了协议，但不满的抱怨声仍时有所闻。

Although an agreement has been reached, rumbles of resentment can still be heard.

《牛津词典》

他讲的笑话很糟糕，我们都发出不满的抱怨声。

We all groaned at his terrible jokes.

《牛津词典》

灯光熄灭了，一时间游客的噪声从短暂的抗议的抱怨声变成了贪婪的咆哮声，接着变成了失望的低语声。

The lights go off, and the din of the tourists turns from a momentary grumble of protest to a greedy growl to whispered disappointment.

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