Based on cardiopulmonary exercise testing (CPET), the test on 48 youth medium distance running athletes of Shenyang was conducted, and their cardiopulmonary function was analyzed.

通过心肺功能运动试验(CPET)，对沈阳市48名少年中长跑运动员进行测试，分析其心肺功能的特点。

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Find a rolling course the length of a medium-distance run or use a treadmill to simulate a medium-distance hilly course.

找一段中等距离长的盘山路进行，或者在跑步机上模拟中等距离的山坡跑。

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You might think that a guy with a well-established penchant for blurting out things that brought the world down on his head would want to maintain minimum safe distance from a medium that at times seems to exist primarily to lull smart people into committing public acts of stupidity.

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Those conditions came happily together in Chagall's wonder years of 1911-17: new idioms in art, the persistence of Hasidic life in the shtetl, and an artist who found distance enough to reconfigure that life in the universal medium of paint.

ECONOMIST: Marc Chagall