n. phrase or sentence whose meaning is not clear from the meaning of its individal words and which must be learnt as a whole unit.
壹個詞組或句子，不是表面的意思，有隱義
It's not my cup of tea. 那不是我喜歡的
I won't do that even you paid me. 付我錢我都不幹
Can't learn an old dog new tricks. 老狗學不會新把戲
Are you pulling my leg? 妳在和我開玩笑吧？
dead easy 形容非常簡單
a finger in every pie 形容壹個人在任何領域都有接觸
學了太多太多了，感興趣可以加我