过栏技术还存在缺陷。
跨栏者过栏后脚掌抓地，此时仍然保持自然弯曲状态。
The hurdler "paws" the lead foot down to the track as he clears the hurdle, with the foot still dorsiflexed.
用运动学观点，从起跨上栏、腾空过栏和下栏支撑三个方面进行分析。
From the perspective of kinesiology, three aspects are analyzed concerning fence - ascending, fence - over striding and fence - descending.
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