巴塞罗那足球俱乐部是西班牙最成功的球队之一。

Barcelona ___FC is one of the most successful teams in Spain.

即使产量翻倍，公司的固定成本也不会增加。

Even if production doubles, the company's ___FC won't increase.

二战期间，战斗机指挥部负责协调不列颠空战的防御行动。

During the Battle of Britain, ___FC coordinated the air defense operations.