Small ski run for professionals.
专业小型滑道。
入门小型滑道。
That ski run is for the experts only.
那个滑道是高手专用的。
Increase the amount of oxygen, and you can run, bike, swim, or ski faster.
提高输送氧气的数量，你就能跑得、骑得、游得或滑得更快。
Increase the amount of oxygen, and you can run, bike, swim, or ski faster.
提高输送氧气的数量，你就能跑得、骑得、游得或滑得更快。
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