"doesn't know his ass from a hole in the ground" in Chinese (Simplified)

• 一窍不通（粗鲁表达）
• 毫无头绪（粗俗说法）

Definition

这是很粗鲁和侮辱性的说法，用来指某人对重要或基本的事情一窍不通，完全不了解。

Usage Notes (Chinese (Simplified))

极其粗鲁和侮辱性的表达，通常只在亲密朋友之间的玩笑或电影/书籍中出现。绝不用于正式或商务场合。常用于批评某人在某方面一窍不通。

Examples

People say he doesn't know his ass from a hole in the ground when it comes to computers.

人们说他在电脑方面**一窍不通**。

My uncle doesn't know his ass from a hole in the ground about cars.

我叔叔对汽车**一窍不通**。

I'm sorry, but he doesn't know his ass from a hole in the ground in this subject.

对不起，但他在这个问题上**完全不懂**。

Honestly, that guy doesn't know his ass from a hole in the ground when it comes to fixing things.

说实话，那家伙修东西时**一窍不通**。

She acts confident, but she doesn't know her ass from a hole in the ground about business.

她表现得自信，但关于生意**一窍不通**。

You'd think after all these years he'd get it, but he doesn't know his ass from a hole in the ground.

你会觉得这么多年他应该明白了，可他还是**一窍不通**。