behind someone's back片語KK [bɪˋhaɪnd ˋsʌmˏwʌnz bæk] /bɪˈhaɪnd ˈsʌmˌwʌnz bæk/發音片語1背著某人、暗中、私下They changed the whole plan behind my back.他們背著我把整個計畫改掉了。2在背後說壞話、偷偷議論多與 talk、say 連用She complains about her coworkers behind their backs.她總在同事背後抱怨他們。