half step
noun [ C ] US uk/ˈhɑːf ˌstep/ us/ˈhæf ˌstep/ (UK semitone)
（西方音乐中音阶的）半音
the smallest difference in sound between two notes that are next to each other in the Western musical scale
Compare: whole step
英汉双解词典收录81607条英汉双解翻译词条，基本涵盖了全部常用单词的读音、翻译及用法，是英语学习的有利工具。