*** play by ear ***

在没有明确计划或准备的情况下，根据当前情况决定下一步如何行动，随机应变

词组分解

ear - 耳朵，听觉

例句

We don't have all the data yet, so we'll have to play it by ear during the negotiations.

我们还没有收集到所有数据，所以在谈判中我们必须临机应变。

The market is unpredictable right now. Let's play by ear and remain flexible.

市场目前不可预测。让我们见机行事，保持灵活性。

++ 额外小分享 BONUS ++

remain + adj. 保持...的状态