As you stand, maintain the natural curve in your lower back and keep your core muscles tight. Use your leg muscles - not your back - to lift the object.

在你站起来的时候，继续保持腰背部的自然曲线，保持收紧你的核心肌肉。用你的腿部肌肉——不是背部——去抬起物品。

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Teachers often tell beginners to lift their sitting bones in forward bends because beginners tend to round their backs in such poses, which can lead to disk compression and lower-back injuries.

老师通常告诉初学者在前屈中尽量抬高他们的坐骨，以免弓着腰，因为那样的话可能会伤害到下背部。

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Since the muscles in the abdomen and lower back play an important role in preventing collapse, move the navel toward the spine and lift the sacrum away from the lumbar spine.

此过程中，腹部和下背部肌肉的作用非常重要，所以你需要将肚脐内收，同时把骶骨向上提。

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New joints in the robot's base and lower back enable RIBA-II to crouch down and lift a patient off a futon at floor level (Figure 1), the most physically strenuous task for care-givers and one that RIBA was not able to do.

ENGADGET: RIBA-II healthcare robot now stronger, smarter -- still a bear