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

VOA: special.2009.09.13

We used iterative deletion in a relatively abstract setting, or not abstract, rather a play setting last time in which were choosing numbers.

我们在相对抽象的背景下探讨迭代剔除,其实也没那么抽象,比如上一讲,我们做的选数字的游戏

耶鲁公开课 - 博弈论课程节选

This week we play music by blues great Koko Taylor, who died last week at the age of eighty.

VOA: special.2009.06.12

You may tell a friend that the new play you saw last night is not so hot.

VOA: special.2009.12.06

The sunlight that shone upon children who had,at last,the right to play.

VOA: special.2010.08.01

Our last expression is to play it by ear.

VOA: special.2009.09.13

Let's go get this done. Thank you everybody. God bless you,". Mr.Obama went to the arena where John McCain accepted last year's Republican presidential nomination, and said the nation can no longer afford to play games with health care.

VOA: standard.2009.09.12