This idiom satirizes those who worry unnecessarily.

“杞人忧天”这个成语讥笑那些没有必要或毫无根据的忧虑。

youdao

But that still doesn't mean that you should use this idiom!

但是仍然不意味着应当使用这个idiom ！

youdao

Many functional languages have specific methods to iterate over lists using this idiom.

许多函数语言均利用这一特点通过特定的方法实现列表遍历。

youdao

The idiom of this music often moved away from the poignant, seductive minor-key flavor of Balkan, Arabic and Klezmer music.

WSJ: Making Music Against the Odds | Ensembles of Afghanistan National Institute of Music

Inevitably, the critical idiom which Mr Fish uses has changed over this 30-year period, although he claims, a little too proudly perhaps, that his central beliefs about Milton have not.

ECONOMIST: Literary criticism