"know by heart" in Chinese (Simplified)

• 熟记于心
• 背得滚瓜烂熟

Definition

完全记住某事，可以不用看就能背诵或使用；对某事烂熟于心。

Usage Notes (Chinese (Simplified))

适用于正式和非正式场合，通常指死记硬背课文、数字、诗歌等。不建议直译为“用心知道”；常见说法有“背下来”、“熟记”。

Examples

I know by heart all the words to that song.

我把这首歌的所有歌词都**背得滚瓜烂熟**。

He can know by heart the whole poem.

他能把整首诗**背得滚瓜烂熟**。

Do you know by heart your address?

你**熟记于心**你的地址吗？

After so much practice, she knows by heart every dance step.

反复练习后，她把每个舞步都**背得滚瓜烂熟**。

You should know by heart your emergency contact number.

你应该**熟记于心**你的紧急联系电话。

He recited the speech as if he knew it by heart.

他背诵演讲稿时，就像**背得滚瓜烂熟**一样。