Well, the ground just pushes right back, supplying a force forward and up that propels the skaters into a glide or jump, depending on the particulars of the force they applied.
于是，冰面反推回去，提供了前进和上升的力量，推动选手滑翔或跳跃，而力量细节取决于选手们原作用力的特殊性。
The left foot's heel must be slightly off the ground at this stage. As you drag back, do not push down on the left foot at all or it will not glide.
做这一步的时候，左脚跟要稍微离地，左脚不要往下踩，否则就滑不起来了。
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