名词
中文翻译：Unknown
同义词：
['swaying motion', 'rocking movement']
例句：
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1.The boat was rocking back and forth in the strong waves.
船在强劲的波浪中左右摇摆。
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2.She rocked her head to the rhythm of the music.
她随着音乐的节奏摇头。
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3.The baby was starting to learn how to rock herself to sleep.
宝宝开始学习如何自己入睡。