直膝屈髋 lying curl
严重关节屈曲强直 Ankylosis with severely flexinal abnormality
刚直不屈 unyielding
直膝屈身跳 pike jump
垂直屈膝姿势 vertical bent knee position
高位直杆屈臂伸 Standing High-Cable Curl
颈项强直和屈髋伸膝征 Kernig sign
直臂一屈臂一直臂划水 straight-bent-straight pull
肘关节屈曲位僵直 flexion position elbow stiffness
时不时地，我看见树木在风中摆动，在我的眼中，它的屈直都有清晰的母亲的痕迹。
Every now and then, I see a tree shift in the wind and its bend has, to my eye, a distinctly maternal cast.
开发中的问题髋屈肌一直缺乏适当的运动。
The problem in developing hip flexor strength has been the lack of appropriate exercises.
这个坐立前屈体式从跟腱开始拉伸，伸展了腿部后侧和骨盆，一直向上延展脊椎到颅底。
This seated forward bend stretches a muscle chain that begins at the Achilles tendon, extends up the back of the legs and pelvis, then continues up along the spine to end at the base of your head.
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