pin down造句
It has taken until now to
pin down its exact location.
直到现在才确定了它的准确位置。
We should use our secondary forces to
pin down several enemy columns.
我们应该用助攻部队来牵制住敌人的几个纵队.
He was sure he would
pin down the enemy between two firing lines.
他确信自己能够把敌人压制在两条火力线间。