要着重讲授或改善每个划臂阶段的水感- -讲授象划水掌、脚蹼和外科医用胶管等训练辅助物的使用，将会有助于提高感官知觉的输入。
Emphasize the feel of each stroke phase being taught or improved - teaching aids such as paddles , fins , and surgical tubing may help to improve sensory input.
这一练习有助于运动员集中注意力于一臂的划水动作上。
This drill helps seimmers focus on stroking correctly while ring jrst one arm at a time.
同时，让另一只手开始划水，移臂后也让手停在头的正上方。
As you do this, take a stroke with your other hand, and return it to the PAUSE position just above your head.
如果你总是在仰泳划水的时候手臂过肩线，那么这个双臂练习就会让你很难做到，因为你必须在移臂时手臂交叉才能做到那样。
If you consistently over-reach on your backstroke pull, double-arm makes this very tough to do, because you have to cross your arms during the recovery to accomplish that.
这是基本单臂划水训练，起始时就有很好的流线形。左臂移动？，保持好的流线，注视池底。
This is single arm drill elementary starting up with a good stream line position. left arm moving? And you notice Lindsay keeps a good line looking at the bottom of the pool.
在手和臂入水后，仍继续在头前沿着身体的中线延伸。 向后推臂的动作从在前方抓（抱）水开始，然后向下向后推至身体的中线，这时划水的手臂几乎要碰到自己的腹部。
He continue to extend his hand and arm after they enter the water, upstretch in front of his head, along the center line of his body.
当对侧手向后推水，达到最快的划水速度和最大推进力的时候，移臂开始加速，驱动手掌前伸入水。
The arm recovery accelerates and the hand drives forward into the water while the opposite hand pushes back achieving maximum hand velocity and propulsion.
当对侧手向后推水，达到最快的划水速度和最大推进力的时候，移臂开始加速，驱动手掌前伸入水。
The arm recovery accelerates and the hand drives forward into the water while the opposite hand pushes back achieving maximum hand velocity and propulsion.
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