动词
中文翻译：抱怨
同义词：
['accuse', 'grumble', 'grouse']
例句：
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1. She complained about the longwait at the checkout line.
她抱怨在结账处排队等了很长时间。
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2. Hecomplained that the service was inadequate.
他抱怨服务不周到。
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3. Themanager promised to fix the problem as soonas possible.
经理承诺尽快解决这个问题。