奥运会前，运动员们在训练营进行了为期两个月的集中训练。

Before the Olympics, the athletes underwent two months of intensive preparation at the ___training camp.

该组织在山区设立了秘密训练营，用于对新成员进行思想灌输。

The group established hidden ___training camps in the mountains to indoctrinate recruits.

他参加了为期两周的篮球训练营来提高投篮技巧。

He joined a two-week basketball ___training camp to improve his shooting skills.