lag
verb uk/læɡ/ us/læɡ/ -gg-
(MOVE SLOWLY)
[ I ]缓慢移动;掉队，滞后
to move or make progress so slowly that you are behind other people or things
He's lagging behind - I think we'd better wait for him to catch us up. 他有点掉队了——我看我们最好等他赶上来。
Sales are lagging at the moment. 目前的销售很不景气。
(COVER)
[ T ]（为保温而）覆盖，（为防止结冰而）给…加保温层
to cover something with a thick layer of material in order to stop heat from escaping or to stop water from freezing
to lag pipes 给管道加保温层
(PRISON)
[ T ] Australian English informal使入狱，逮捕
to send someone to prison or to arrest someone
lag
noun [ C ] uk/læɡ/ us/læɡ/
(DELAY)
（两件事之间的）间隔，延迟
a delay between two things happening
You have to allow for a time lag between order and delivery. 订货和送货之间要有一段时间间隔。
(PRISONER)
UK old-fashioned informal囚犯，犯人;惯犯
a prisoner or a person who has often been a prisoner in the past
an old lag 惯犯