fall back

• • 撤退，后退，退却：

    We charged and the enemy's front line fell back.

    我们发起了冲锋，敌人的前线被迫后退。

  • 往后倒下，仰面跌倒：

    She fell back and hurt her head.

    她向后倒下，摔伤了头。

  • 失约，食言：

    Once he made a promise of help,he would never fall back.

    他一旦答应帮忙，便决不会食言。

  • 落伍，跟不上，缩减：

    Production has fallen back in the last few months.

    最近几个月生产一直上不去。

    Price will never fall back.

    价格绝不会降低。

  • (海岸线)后缩