经过长时间的抵抗，敌军最终投降了。

After prolonged resistance, the enemy forces finally ___capitulated.

敌军在被围困一周后投降了。

The enemy forces ___capitulated after being besieged for a week.

经过长时间谈判，公司最终屈服于工会的要求。

After long negotiations, the company finally ___capitulated to the union's demands.