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some people lose their lives because they have no chance to learn swimming, especially in poor areas. there are no safe learning grounds . This is equivalent to a safe swimming pool in a river, which controls the water level to a certain extent. its water comes from a river and does not waste water resources. it is inflated as a whole to provide buoyancy. it can be freely combined by adopting a modular design. it can be used as a floating board when used alone and can be used to learn swimming. when used multiple times, it can form a small swimming pool.
Jiangxi University of Finance and
Economics
Nan Chang, China
huiling huang,
Jiangxi University of Finance and