As there is no gravity, you can't stand and any slight push can result in tragedy you can be pushed into space, never be back.

因为没有重力，你无法站立，任何轻微的推力都可能导致悲剧，你可能被推到太空中，再也不会回来。

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On our spherical Earth, gravity pulls "down" us toward the planet's center of mass. So on a flat surface, we naturally stand up straight.

在我们地球上，重力会把我们拉向星球的质量中心，因此在平坦的地表，我们自然站得很直。

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If shoes are uncomfortable when you stand, they're likely to feel even worse when you walk. The wrong shoes can affect the body's centre of gravity.

如果穿鞋站着都不舒服，那么走起路来会更难受。不舒适的鞋子会影响身体的重心。

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SAP's tool, called Gravity, lets users design business processes in Wave, while Novell's Pulse, a stand-alone product that will be released in 2010, will add security features, an improved chat function and live editing of Microsoft Office documents.

ECONOMIST: Monitor