室しつ内ないプール

noun

indoor swimming pool; indoor pool

Refers to a swimming pool located inside a building, as opposed to an outdoor pool (屋外プール).

• このホテルには室しつ内ないプールがあります。

  This hotel has an indoor swimming pool.

• 冬ふゆでも室しつ内ないプールで泳およげます。

  You can swim in the indoor pool even in winter.