upward attack

例句：

1. 1. The enemy launched an upward attack on our position.
   敌人向我们的阵地发起了向上攻击。
2. 2. The soldiers were ordered to launch an upward attack against the enemy.
   士兵们被命令向敌人发起向上攻击。
3. 3.The military strategy involved launching an upward attack to break through the enemy's defenses.
   军事策略包括发起向上攻击以突破敌人的防线。