举腿：在椅子上坐直，脚放在地板上，然后把膝盖弯曲尽力向胸靠拢。
Lifts: Seated in a chair with your back straight and your feet on the floor, squeeze knees together and gently bring them toward your chest.
孵化后，少年(少年阶段1和2)也重视母亲的腹足了6个星期的手段胸足的弯曲。
After hatching, juveniles (juvenile stage 1 and 2) are also attached to mother's pleopod by means of their curved pereiopods for 6 weeks.
目的探讨脊柱胸腰段骨折椎弓根螺钉系统内固定后，椎弓根螺钉断裂及弯曲松动的原因。
Objective To investigate the causes of breakage, bending and loosening of pedicle screw systems in fixation of spinal fractures of the thoracolumbar segments.
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