1 . step on
in different directions 以不同方向step on 踏, 踩rush out of 沖出
2 . tread
travelling crane移動式吊車tread踩,踏treadle踏板
3 . stepping on
I ' m really sorry for stepping on your toe . Are you right ?, 踩在你的腳上真是非常對不起 . 你還好吧?
4 . stepped on
And all of them stepped on the head of poor Mack ., 所有的烏龜都踩在莫克可憐的頭上.