求翻译：实现增大步幅、降低重心的竞走技术难度主要体现在骨盆转动和下肢技术动作中的直膝后扒技术和能力。是什么意思？

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To increase stride, lower the center of gravity of the race technical difficulty primarily reflected in the pelvis and lower extremities technology moves in the laptop has been sought after technical and capacity.

The realization increases the stride width, reduces the center of gravity the heel-to-toe walking race technology difficulty mainly to manifest after the pelvis rotation and the lower limb technology movement straight knee digs up the technology and ability.

Race walking technical difficulty to achieve increase stride length, lower center of gravity is mainly reflected in the technical movements in the rotation of the pelvis and lower limbs posterior knee PA technology and capabilities.

正在翻译，请等待...