问:夏季马上就要来了,看到周围很多妈妈把孩子送到游泳训练班,我也想把自己的孩子送去,但我不知道多大的孩子学游泳合适,游泳对孩子到底能有多大的好处? Q: The summer is coming soon. I see many mothers around and send their children to the swimming training class. I also want to send my own children, but I do not know how old the children learn to swim and how much the child can swim in the end. the benefits of?