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In order to solve the economic problem of some lowsocial class families,give the children a good swimming environment to study , and let them have the subconscious mind to study swimming slowly.It can make parents use their own simple way to teachtheir children.Increase with age，parents are required to use products to teach their children swimming skills according to their age at each stage.
xi`an university of science & Tech-
ShouLei Zhang Zhang,
xi`an university of science & Technology