How to Teach a Child to Tread Water
教孩子踩水是很困难的,因为腿的运动。教孩子们踩在这个自由视频从一个游泳教练技巧游泳课。
Teaching a child to tread water can be difficult because of the movement of the legs. Teach children to tread water with tips from a swimming instructor in this free video swim lesson.