blockern.阻挡之物或人；阻断剂；拦网队员blockn.街区；木块；石块；大楼；一组；阻塞(物)；障碍(物)v.阻塞Blocking Water堵水block gradient块梯度block the road阻塞道路block of words字组block interval闭塞间隔,闭塞区段长度block operator线路所值班员block calendar日历block location块定位block compress分块压缩blocking lever闭塞杆,联锁杆