プール開びらき

noun

pool opening; opening of a swimming pool for the season

Refers to the event or ceremony marking the start of the swimming season, typically at schools or public pools.

• 来らい週しゅうの土ど曜よう日びは小しょう学がっ校こうのプール開びらきです。

  Next Saturday is the elementary school's pool opening.

• プール開びらきの日ひは、みんなで水みず遊あそびを楽たのしんだ。

  On the day of the pool opening, everyone enjoyed playing in the water.