动词短语
中文翻译：背诵
同义词：
['memorize', 'recite', 'commit to memory例句：1. She learned the song by heart and performed it beautifully.（她背下了这首歌，表演得非常美妙。）']
例句：
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1. She learned the song by heart and performed it beautifully.
她背下了这首歌，表演得非常美妙。
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2. The teacher encouraged us to learn new languages by heart.
老师鼓励我们通过背诵来学习新语言。
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3.He committed to memorizing all the vocabulary for the exam.
他承诺要记住所有的词汇以便考试。