The straight arm is brought around in a full circle, with the hand flat (see paddle wheel figure).

直臂划手是把手臂绕一个整圈，手平放(就像明轮的图)。

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Then try a few single-arm strokes with each arm, building into full stroke swimming.

然后试着做些单臂与另一个手臂的交替练习，建设成为全程游泳的练习。

youdao

Then try a few single-arm strokes with each arm, building into full stroke swimming.

然后试着做些单臂与另一个手臂的交替练习，建设成为全程游泳的练习。

youdao