double post attack

例句：

1. 1. The enemy launched a double back attackon our troops during the night.
   敌人在夜间对我们的部队发动了双重后攻击。
2. 2. Thedouble back attack caught us off guard andwe were unable to respond in time.
   双重后攻击让我们措手不及，我们无法及时做出反应。
3. 3. The double back attack wasa major tactical error by theenemy.
   双重后攻击是敌人的一次重大战术失误。