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
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。