士兵们用机枪扫射了敌人的阵地。

The soldiers used a ___machine gun to sweep the enemy's position.

士兵们用机枪扫射敌人的阵地。

The soldiers ___machine-gunned the enemy's position.

他像机关枪一样快速回答了所有问题。

He ___machine-gunned through all the questions in seconds.