let one's hair down片語KK [lɛt wʌnz hɛr daʊn] /lɛt wʌnz hɛɹ daʊn/發音片語1放鬆、盡情玩樂、不拘束口語After the exams, we finally let our hair down at the beach.考完試後,我們終於在海邊盡情放鬆了一番。2敞開心扉、暢所欲言口語She rarely lets her hair down about her private life.她很少敞開心扉談自己的私生活。