step in片語動詞KK [stɛp ɪn] /stɛp ɪn/發音片語動詞1介入、干預、出面The government had to step in to stop the strike.政府不得不出面干預,以平息這場罷工。2接手、代替、頂替When the lead singer got sick, her sister stepped in.主唱生病時,由她的妹妹頂替上場。3走進、踏進She stepped in and closed the door behind her.她走進來,隨手把門關上。