Butterfly forward movement is caused by arm pull and hip movement upwards.
蝶向前是靠拉臂上提臀促成。
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There shall be no kick , arm pull , or floatation that is independent of the turn.
这时将没有踢腿、划臂或者与转身无关的漂浮。
应用推荐
模块上移
模块下移
不移动