"know backwards and forwards" in Chinese (Simplified)

• 了如指掌
• 熟记

Definition

对某事非常熟悉、理解透彻，通常是因为多次经历或背诵。

Usage Notes (Chinese (Simplified))

非正式表达，形容对某事非常熟悉，通常用于技能、知识点、流程等。不是真的从后往前懂，而是强调熟知每个细节。类似 "了如指掌"。

Examples

She knows the rules backwards and forwards.

她把规则**了如指掌**。

My dad knows this city backwards and forwards.

我爸爸**对这座城市了如指掌**。

He knows the song backwards and forwards.

他这首歌**熟记于心**。

Ask Jane—she knows the software backwards and forwards.

问简吧，她对这个软件**了如指掌**。

I've read that book so many times, I know it backwards and forwards.

我读那本书太多遍了，**了如指掌**。

You really know this job backwards and forwards now.

你现在真的**熟练掌握了这份工作**。