搭配 “learn something by heart 用心学某事” 的含义是 “记住某事”,即 “凭记忆背下来”。人们也用 “learn something off by heart” 表示相同的意思。
She had learnt her presentation off by heart; she didn't look at her notes once!
她把这次演讲要说的话都背下来了,她一次也没看准备的笔记!
I had to learn poems by heart at school; I can still recite them now.
我上学那会儿要背诗,到现在我还能背下来呢。
Actors have to learn all their words by heart, so that they can remember them during a performance.
演员得牢牢记住台词,这样他们才能在表演时记住要说什么。