The swimming pool is a special place for people to swim, and people can have
activities or competitions in it. Most swimming pools are built on the ground and can
be divided into general swimming pools and warm water pools according to the
water temperature. Indoor and outdoor. The official swimming pool shall be 50
meters long, at least 21 meters wide and at least 1.8 meters deep. The pool for
swimming, diving and water polo is 1.3 ~ 3.5 meters deep.