动词短语
中文翻译：呻吟
同义词：
['grumble', 'moan', 'groan']
例句：
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1.She grumbled about the traffic jams on the way to work.
她抱怨上班路上的交通堵塞。
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2. The old man groaned as he lay in bed, unable to move.
老人躺在床上，无法动弹，呻吟着。
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3.The baby cried and groaned for hours after it fell asleep.
婴儿在睡着后哭了几个小时，又呻吟了几个小时。