The practitioner of the technology of back forward slippery step shot put often can not accurately understand and grasp techniques, thus can not coordinate to make efforts.
背向滑步推铅球技术的习练者往往不能准确理解和掌握技术细节，因而不能协调用力。
The practitioner of the technology of back forward slippery step shot put often can not accurately understand and grasp techniques, thus can not coordinate to make efforts.
背向滑步推铅球技术的习练者往往不能准确理解和掌握技术细节，因而不能协调用力。
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