1.  know sth by heart
2.  learn by heart
3.  learn off

• 1. 背熟: learn by heart | Memorize | memorize the alphabet | study
• 2. 每日背熟一句英语: I'll batch close my treads once every tow weeks
• 3. 你应该把这些词背熟: you should learn these words by heart

更多释义

• 1.她把整篇讲话都背熟了。
  She's learnt the whole speech off by heart.
  dict.yoduao.com
• 2.希德几天前把他要学的段落背熟了。
  Sid had learned his lesson days before.
  dict.yoduao.com
• 3.那位演员已经把他的台词背熟了。
  The actor has learned off his lines.
  dict.yoduao.com

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