attack polishing method

例句：

1. 1. The enemy attacked our position withheavy artillery.
   敌人用重炮向我们的阵地发起了攻击。
2. 2. The policeare investigating the attack on the city center.
   警方正在调查市中心的袭击事件。
3. 3. Thesoldiers were ordered to attack the enemy's lines.
   士兵们被命令向敌人的防线发起进攻。