lag behind

• • 落后，落在后面；慢于，落后于:

    Several players began to lag behind even at the beginning of the race.

    比赛刚进行就有几名选手落在了后面。

    We must achieve modernization of science and technology, otherwise we will lag behind other nations.

    我们必须实现科学技术现代化，否则我们要落后于其他国家。

  • 拖欠，拖延付款：

    The students were so poor that they always lagged behind with the rent.

    学生们很穷，他们老拖欠房租。

  • 落在(…)后面