idiomatic phrase的用法和樣例：
例句
- Idiom refers to a phrase whose meaning is different from the meanings of each word considered separately.
習語(yǔ)，在英語(yǔ)中指那些意義不同于字面意義的固定短語(yǔ)，在漢語(yǔ)中指四字格成語(yǔ)。 - An idiom is a phrase refined from a longtime use with the features of conciseness, metaphor and penetration, etc.
習語(yǔ)是經(jīng)過(guò)長(cháng)時(shí)間的使用而提煉出來(lái)的固定短語(yǔ)或短句，它一般具有文字簡(jiǎn)練，比喻形象，含義精辟等特點(diǎn)。
