| 释义 |
fall behind- 落后于，跟不上，被超过，被甩在后面：
He didn't want to fall behind in his studies. 他不想在学习上落后于别人。 Soon he fell behind in the race. 很快他在赛跑中落在了后面。 - 拖欠(债务等)；没有按时完成(或履行)任务(常与with连用)：
If you fall behind with the rent,you will be asked to leave. 你要是拖欠房租，叫你立即走人。 I've fallen behind with my correspondence. 我积压了许多信件未作答复。 - (水平、质量等)下降：
The student's work has been falling behind recently. 近来，这个学生的作业质量一直在下降。 - 落在(…)后面
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