He fell behind the others in study.

他在学习方面落后于其他人。

My turtle fell behind a radiator and was not discovered until too late.

我的龟掉到一个散热器的后面，发现时已经太晚了。

She soon fell behind the leaders.

她很快就落在领先者的后面。

Soon he fell behind in the race.

很快他在赛跑中落在了后面。

So he fell behind in his studies.

于是他学习落后了。

Smith fell behind in the race.

史密斯在赛跑中落后了。

He fell behind with his work.

他工作落后了。

The horse fell behind in the race.

那匹马在比赛中落后了。

But he never fell behind.

但他从不落人后。

The leader's opinion had fell behind.

那个领导的观点已经落伍了。

Several of the runners fell behind in the race.

有几个赛跑者在比赛中落在后面了。

I fell behind, I shall catch up with my classmates.

我落后了，我要赶上我的同学。

The central bank moved fast and never fell behind events.

中央银行行动迅速绝不会落后与经济事态。

But he never fell behind. He's headed to college this fall.

但他从来没有落后过，今年秋季他将考入大学。

She soon fell behind other students because of illness.

因为生病她很快落在了其他同学的后面。

At first we were in front of them. Then we fell behind.

起先我们在他们前面，后来落后了。

Andrew fell behind in his studies and failed the course.

安德鲁学习赶不上去，所修课程不及格。

He fell behind early and was unable to recover, coming in second.

他很早就落在后面并不能赶上，获得第二名。

He could have finished it on schedule, but somehow he fell behind.

他原本能按预定进度做完这件事的，但不知怎地却落后了。

John fell behind in his studies and finally had to leave school.

约翰在学习上跟不上别人，最后只得离开学校。

Because of rain, construction on the subway system fell behind schedule.

由于下雨，导致地铁的工程进度落后。

We thought the horse would win, but he fell behind halfway through the race.

我们曾认为这匹马会取胜，可是他在比赛中途落后了。

If you fell behind in your payments, the finance company may seize your car.

假如你不能按时付款，信贷公司就可能扣你的车。

Li Xiaohu spent too much time playing computer games and fell behind others.

李小虎花太多的时间玩电脑游戏，落后于别人。

No matter how hard he tried, he always fell behind other swimmers in the contest.

无论他多么努力，他总是在比赛中落后于其他游泳选手。

When I made great progress, I was so happy, but when I fell behind, I would not give up.

当我取得很大的进步的时候，我很高兴，但是当我落后，我也不会放弃。