learn...by heart这个短语有无过去式?

learn...by heart这个短语有无过去式? know/learn by heart Learn the text by heart learn sth by heart造句 请问有learn by这个短语吗,是什么意思?谢谢. learn by heart中的heart什么意思 Learn the rhyme by heart怎么翻译 learn sth.by heart的意思 learn the new words by heart意思 翻译：you should learn it by heart until you learn it by heart是什么意思. learn by heart 的中文意思