Several of the runners fell behind in the race.

有几个赛跑者在比赛中落在后了。

Why does she always lag behind others when we're out for a walk?

为外出散步时, 她总落在后?

I trailed on behind, haggard and disheveled.

惫不堪地落在后，形容憔悴，头发蓬。

In my first month at college I was continually chasing my own tail and being late for everything.

上大学的第一个月瞎忙一气，还是落在后。

The lame child lagged behind.

那个跛脚的小孩落在后了。