DICT.TW Dictionary Taiwan

 step in
 走進,進入;介入,干涉

 step in
      v 1: get involved, so as to alter or hinder an action, or through
           force or threat of force; "Why did the U.S. not
           intervene earlier in WW II?" [syn: intervene, interfere,
            interpose]
      2: act as a substitute; "She stood in for the soprano who
         suffered from a cold" [syn: substitute, deputize, deputise]