lag gravel

例句：

1. 2.
   在比赛中
2. 3.
   在时间上
3. 1. The team has been trailing in the competition for the past few weeks.
   这个团队在过去几周一直在竞争中落后。
4. 2. The project is lagging behind schedule.
   这个项目的进度落后于计划。
5. 3. She was late to class because she had a car accident and had to wait for her friend toarrive.
   她因为车祸迟到了，不得不等她的一个朋友到达。