play by ear片語動詞KK [ple baɪ ir] /pleɪ baɪ iɹ/發音片語動詞1見機行事、隨機應變、臨場決定可拆開We don't have a fixed schedule, so let's just play it by ear.我們沒有固定行程,就見機行事吧。2憑聽覺演奏、不看樂譜演奏可拆開She never learned to read music but plays the piano by ear.她從沒學過看樂譜,卻能憑聽覺彈鋼琴。