play (something) by ear idiom
C2 凭记忆演奏一曲音乐
to play a piece of music by remembering the notes
He did not need sheet music. He could play the piece by ear. 他不需要曲谱，他可以凭记忆演奏那首曲子。
江苏热线英汉汉英双解词典包含207361条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。