play it by ear

基本解釋

Let's play it by ear, okay?
玩耳朵？
So the WHO has decided to play it by ear, and given the unpredictability of flu, this is probably not a bad thing.
因此，世衛(wèi)組織已經(jīng)決定讓出發(fā)言權(quán)。因爲(wèi)流感的標(biāo)準(zhǔn)存在不確定性，所以這樣做或許也不是一件壞事。
I haven't had a chance to prepare any notes so all I can do is start talking and play it by ear.
可是play by ear現(xiàn)在已經(jīng)成爲(wèi)日常用語(yǔ)了，意思是做一件事不是事先有計(jì)劃的，而是走著瞧，臨時(shí)決定。例如，你被請(qǐng)到某処去講話，可是又沒(méi)有時(shí)間準(zhǔn)備。

Play it by ear also means to decide what to do at the last minute instead of making detailed plans.
Our last expression is to play it by ear.

In essence, the Fed will play it by ear.
FORBES: Why Central Bankers Rule The World

to decide how to deal with a situation as it develops, rather than acting according to plans made earlier