One does not need Einstein's grasp of mathematics to understand that we cannot keep pace on our current trajectory.

不用爱因斯坦的把握，我们无法理解数学同步于现行轨迹。

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In South Africa, as in many developing and newly industrialized countries, legislation on air pollution has failed to keep pace with mushrooming industries.

同许多发展中国家和新兴工业化国家一样，在南非，关于空气污染的立法未能跟上迅速发展的工业的速度。

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The biggest is trying to keep at it on a normal pace.

最大的问题是如何保持一个正常的步伐。

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All were watching as a heavyset forty-six-year-old woman, with cornflower-blue eyes, a sweet smile, and auburn hair parted neatly in the middle, struggled to keep pace on a treadmill.

NEWYORKER: The Operator

The Association of American Medical Colleges has warned that the supply of new doctors can't keep pace, due to limits on federal funding for medical residency programs, and estimates that the U.S. will face a shortage of more than 90, 000 physicians by 2020, particularly in primary care and in rural areas.

WSJ: Battles Erupt Over Filling Doctors' Shoes

Some crewers ran 80 kilometers, completely anonymously, just to keep their runner on a specific pace.

CNN: Badwater Ultramarathon: 135 miles in 130-degree heat