求翻译：自然站立，双脚与肩同宽，双臂侧平举与两侧肩膀平齐，手掌朝上，先尽量向上抬起胳膊，然后再放下胳膊，反复做20次。是什么意思？

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The nature stands, the both feet and the shoulder same width, the double arm side lifts evenly with the both sides shoulder evenly uneven, the palm of the hand faces on, as far as possible is first upward lifts the arm, then lays down the arm again, makes 20 times repeatedly.

Natural stand feet shoulder width, arms and shoulders flat on both sides, palms up, first try to lift your arm, and then lay down their arms, repeated 20 times.