If there's one lesson from the USA Track and Field study, said Dr. Pereles, it is that "sudden changes are probably not a good idea."

皮若勒博士说：从美国田径研究结果能推得的一个教训就是，做任何突然的改变，可能都不是什么好主意。

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Hopefully this 1 minute, GTD-based lesson will set you on the right track and motivate you to implement a similar system in your own life, a system for productively getting things done.

希望这一分钟基于GTD的课程，能让你走上正确的轨迹，激发你在自己的生活中实施一个类似的方法，一个有效处理事情的方法。

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Discovery: It seems both girls and boys are car enthusiasts at the race track during our Discovery lesson on vehicles.

无论是男孩还是女孩都对我们的赛车有着浓烈的兴趣呢！

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Executives who fail to learn this lesson are often let go despite their track record.

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Publishing houses keep relearning this lesson, as editors overspend for the rights to books that match their own appetites, losing track of mainstream American tastes.

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