quieten
[ˈkwaɪɪtn:]
vt.& vi.
（使）安静;
（使）平静;
（使）平息;
（使）（感情）减轻;
例句:
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Somehow I managed to quieten her down.
我设法让她平静了下来。
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She tried to quieten her breathing.
她努力让呼吸平缓下来。
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It took a long time for the baby to quieten down.
孩子过了很长时间才停止吵闹.
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Things may quieten down, but they will pick up again.
来自BBC
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Richard breathed deeply as if he could quieten his thoughts with the air.
来自C. Brayfield
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I tried to quieten the class down, but there was such a hullabaloo that no-one could hear me!
来自BBC