lag 和 lag behind

america

lag behind; lag behind sb/sth

1 to be behind sb/sth because you are walking more slowly 落后；落在…后面：
◊ Everyone ran down to the beach, but Amy lagged behind.大家都向海滩奔去，只有埃米落在后面。
◊ Susie lagged behind the other children.苏茜落在其他孩子后 面。


2 (in sth/in doing sth) to progress or develop more slowly than others (在…方 面)进展比…缓慢；滞后：
We are lagging far behind our European competitors in using new technology.    在采用新技术方面，我们远远落后于欧洲的竞争对手。

lag搭配用法

♦ v + adv

♦ v + prep