他换成了一个挺直的姿势。
如果在跑步过程开始向前弯腰，那你需要加深呼吸，有意的挺直，随着呼气你就能保持挺直的姿势。
If you start to slouch during a run take a deep breath and feel yourself naturally straighten. As you exhale simply maintain that upright position.
禅坐姿势的最大要点是要保持背部挺直如箭，或如一堆金币。
The most essential point of the meditation posture is to keep the back straight, like "an arrow" or "a pile of golden COINS".
走路的步伐要轻松自在；站立的姿势要端正挺直。
Your walk should be easy and graceful, stand with your back tall and straight.
你妈妈告诉过你当你坐着的时候身子要挺直，她说的很对。最新一项研究显示，一个好的姿势可以让你对自己的想法更加自信。
Your mother may have been right when she told you to sit up straight: New research suggests that good posture could make you feel more confident about your thoughts.
我进入第二个男孩子的家时，他正趴在家里的矮桌上写作业，我教他挺直了背，抬起头，标准了写作业的姿势，为了他的身体健康。
We taught the second boy, who was writing his homework on a dwarf table when we entered, to stand with his back straight, head held up.
保持您的姿势挺而直，抬起头，挺直腰，双肩水平。
Keep your posture straight and erect. Your head should be up, your back straight, and shoulders level.
保持您的姿势挺而直，抬起头，挺直腰，双肩水平。
Keep your posture straight and erect. Your head should be up, your back straight, and shoulders level.
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