青少年的語言成人往往聽不懂。

The language of teenagers is often completely inaccessible to adults.

她講的東西我一個字都聽不懂！

I couldn't understand a single word she said!

我們聽不懂他們在講些什么，因為他們說的是漢語。

We couldn't understand them because they were talking in Chinese.

他們所用的大量行話是外人聽不懂的。

A lot of the jargon they use is unintelligible to outsiders.

她已神志不清，聽不懂我們向她說的任何話。

She was too far gone to understand anything we said to her.

他們的行話外人聽不懂。

Their jargon is impenetrable to an outsider.

我幾乎聽不懂他所講的。

I understood little of what he said.

她說這是女生話題，男人是聽不懂的。

She said it was just girl talk that a man wouldn't understand.

對不起，我聽不懂你的話。

Sorry, I don't follow you.

他們講著外人聽不懂的笑話。

They were sharing a private joke.

她聽不懂那個笑話。

She didn't get the joke.