“Let’s play it by ear.”不是“用耳朵演奏”

“Let’s play it by ear.”在日常对话中表示“先别把计划定死，到时看情况决定”。它并非澳洲独有，英美也常用；语气轻松，但不够确定。

A: Should we book an outdoor table?
B: Maybe not. Let’s see what the weather’s like and play it by ear.

它和“wait and see”接近，但后者偏向先观察；play it by ear 还强调随变化调整行动。需要明确日期或责任时，只说这句会太含糊。

https://dictionary.cambridge.org/dictionary/english/play-it-by-ear