auto-reverse button
/ˈɔːtəʊɹɪvˈɜːs ˈbʌtən/
n
English · auto-reverse button中文 · 自动翻面键Español · botón de rebobinado automáticoFrançais · auto-inversion
意味：Control key that allows the reverse side of a cassette to be played without turning it over manually.