Managing a growing and increasingly complex set of transnational connections is an even bigger challenge in a multi-speed world that is being turned upside down.

更大的挑战是，在一个增长速度不一致、强弱对比正发生逆转的世界中，处理日益增长和复杂的国际关系。

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He set up a number of challenges (three of which have since been claimed) each with a financial reward reflecting their difficulty: The first to fly a figure-eight course around two markers half a mile apart, the first to fly from England to France and a world speed challenge.

ENGADGET: The Highs and Lows of Human-Powered Flight Alt