1.表述：play by ear
釋義1：To be able to play a piece of music after just listening to it a few times, without looking at the notes. （憑聽覺記憶演奏）
例句：Wow, George is such a talented piano player! The way he can play pieces by ear after hearing them just once is so impressive!
John can play the piano by ear. If I could play by ear, I wouldn't have to take lessons—or practice!
釋義2：To make decisions about what action to take in a flexible way, based on the circumstances. （隨機應變，見機行事）
I haven't decided what to say when he comes. I'll play it by ear.
I' ve had no time to prepare for this meeting, so I' ll have to play it by ear.
If we go into the meeting unprepared, we'll have to play everything by ear.
釋義：Nervousness or anxiety felt before one attempts to do something. （在最后時刻失去勇氣，臨陣退縮）
用法：它是名詞短語，做謂語和動詞get搭配，即：get cold feet。
例句：I wasn't nervous until the morning of my wedding, but everyone assured me that it was just cold feet at the last moment.
Good luck getting her out on stage—she always gets cold feet before a performance.
He planned to participate in the demonstration, but then he got cold feet.
今天，我們學習了2個生動形象的雅思詞匯：cold feet，play by ear。Hope that you can bear them in your mind.