by heart
介词短语
英 /baɪ ˈhɑːt/
美 /baɪ ˈhɑɹt/
英文释义
介词短语
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From unaided memory and in full detail.
— to learn something by heart
词形变化
词源
From Middle English by herte. Compare French par cœur (literally “by heart”), of which the English may be a calque.
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数据来源: Wiktionary