sutruck

例句：

1. 1. The enemy launched a sudden attack on our troops.
   敌人对我们的部队发动了突然袭击。
2. 2. He was surprised by the sudden strike of lightning.
   他对于突如其来的闪电袭击感到惊讶。
3. 3. They were caught off guard by the sudden attack of the enemy.
   他们被敌人的突然袭击打乱了阵脚。