4個來回應該容易記住,然後換姿勢-比如自由泳換蛙泳(我隻會這兩種)。每個姿勢4個來回,然後記住換了幾次姿勢就行了。
4個來回應該容易記住,然後換姿勢-比如自由泳換蛙泳(我隻會這兩種)。每個姿勢4個來回,然後記住換了幾次姿勢就行了。
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