短语词组短语block blind off 封闭blockade block seal off 用强制力量使与外界断绝联系或往来water block -off 堵水Block -off current 堵断电流block cut off 隔断early water block -off 先期堵水block off a door 堵住门knock block off 使某人吃苦头block off a street 阻断街道 返回 block off