"know every trick in the book" in Chinese (Traditional)

門兒清無所不知（花招）精通一切竅門

Definition

非常有經驗與技巧，精通所有方法、花招或策略，通常指很難被蒙騙的人。

屬於非正式用語，帶有欽佩或戒備的語氣，常指對方很難被騙，多用於商業、談判或生活經驗場合。

My grandfather knows every trick in the book when it comes to fixing cars.

我爺爺修車時**門兒清**。

She knows every trick in the book to win an argument.

她為了贏辯論**無所不知（花招）**。

If you want to succeed, you need to know every trick in the book.

想成功，你得**精通一切竅門**。

Trust me, he knows every trick in the book—you won't outsmart him.

相信我，他**門兒清**，你騙不過他。

Salespeople know every trick in the book to get you to buy something you don't need.

推銷員**無所不知（花招）**，總能讓你買不需要的東西。

After all these years in the business, she knows every trick in the book.

做了這麼多年，她已經**門兒清**了。