学习用一种放松的方式伸展手臂，充分伸展它们。
Learn to lengthen both your arms in a relaxed way, fully extending them.
手臂和肩膀的旋转伸展动作帮助肩部及其联接躯干的肌肉群充分热身。游泳时将连续不停的运用这些肌肉。
The arm and shoulder rotation stretch warms up the muscle that surrounds the shoulder jointed the body. These muscles are used continuously during swimming.
手臂充分伸展，肘关节伸直离开地。
胸腔充分向上伸展，手臂强有力地向下伸展。
As much as your chest moves upward, extend your arms down strongly.
在检查时，发现由于一个不正常，他无法将手臂充分伸展举过头顶。
During the exam, it was discovered that, due to an abnormality, he couldn't fully extend his arms above his head.
在检查时，发现由于一个不正常，他无法将手臂充分伸展举过头顶。
During the exam, it was discovered that, due to an abnormality, he couldn't fully extend his arms above his head.
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