by heart
US /baɪ hɑːrt/
UK /baɪ hɑːt/
成语
背诵, 熟记
learned or memorized completely
示例:
•
She knows all the lines of the play by heart.
她能把剧本的所有台词都背下来。
•
I learned the poem by heart for the recitation contest.
我为朗诵比赛背诵了这首诗。