城堡的地下室曾经是存放武器的军械库。

The basement of the castle used to be an ___armory for storing weapons.

这座古老的军械库曾为军队生产武器。

The old ___armory was once used to manufacture weapons for the army.

城堡的武器库收藏了许多古代盔甲和弓箭。

The castle's ___armory houses many ancient armors and bows.