[ læɡd ]
v. 走得极慢, 落后( lag的过去式和过去分词 ); 给（管道等）加防冻保暖层
v hang (back) or fall (behind) in movement, progress, development, etc.
v lock up or confine, in or as in a jail
v throw or pitch at a mark, as with coins
v cover with lagging to prevent heat loss
英汉双解字典由 ECDICT 提供