As for the altitude problem we'll try to overcome it with specific training in Sestriere, at high elevation.

至于海拔问题，我们会通过在塞斯·特雷高海拔地区进行针对性训练来努力克服。

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"The altitude for the heart and lungs is not a problem for the horses, " said vet Annina Widmer.

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Researchers at the Massachusetts Institute of Technology and Cambridge University have estimated the impact on the ground of emissions from aircraft flying at cruise altitude (about 35, 000 feet), a problem typically ignored by regulations.

ECONOMIST: Planes and pollution

Engineers and mission control officials worked to quickly identify and fix the problem, before Dragon started tumbling or even losing altitude.

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