by heart片语

片语

1. 1

   熟记、背下来、记牢

   She learned the whole poem by heart in one evening.

   她一个晚上就把整首诗背下来了。

2. 2

   凭记忆

   He played the entire sonata by heart, without any sheet music.

   他全凭记忆弹完整首奏鸣曲，没有看乐谱。