play it by ear
凭感觉行事
口语·随机应变
英文释义
to make decisions or take actions spontaneously or as the situation develops, without having a specific plan or strategy
例句
We don't have a plan, so let's just play it by ear.
典故来源
源自音乐演奏，指不看乐谱而凭听觉即兴弹奏，后比喻根据情况灵活应对。