lag

释义

n. 落后,滞后
v. 落后
vi. 走得慢,落后

例句

1. The children always lag behind when we go for a walk.
   我们出去散步时，孩子们总是落在后面。
2. There was a long lag in forwarding mail to us.
   转寄给我们的邮件晚了很久才拿到。