He was pulled up short by the sight of a man lying unconscious.看到一个人不省人事地躺在地上,他马上停了下来。He began to run/answer and then pulled up short. 他开始跑步/回答问题,但突然间又停了下来。A dog suddenly ran across the road and I had to pull up short.一只狗突然横穿马路,我只好猛踩刹车。She started to answer and then pulled up short.她开始回答,然后突然停了下来。