stop/halt somebody in their tracks | stop/halt/freeze in your tracks
to suddenly make somebody stop by frightening or surprising them; to suddenly stop because something has frightened or surprised you（使由于恐惧或吃惊）突然止步；（使）怔住
The question stopped Alice in her tracks.这个问题问得艾丽斯张口结舌无以答对。
Suddenly he stopped dead in his tracks: what was he doing?突然，他突然停下脚步:他在干什么？
(figurative)The disease was stopped in its tracks by immunization programmes.免疫方案阻止了这种疾病的曼延。