step in1.■走进:to step in the meeting-house步入会场2.■串门,登门造访:Here we are, this is my house. Why don't you step in?我们到了,这就是我家,进来坐一会儿吧!3.■伸脚穿进:to step in the slippers伸脚穿上拖鞋4.■插手,介入,干涉:Seeing such a situation, I had to step in.看到这种情况,我不得不出来解围了。to step in with an offer of weapons提供武器进行干预
见:step: step in