Computer simulations show that if there is more than one giant planet in a solar system's family, they will perform a kind of gravitational arm-wrestling match, making their orbits unstable.

电脑模拟显示，如果在一个恒星系统中有超过一个巨行星存在的话，它们会上演一场“重力掰手腕”比赛，这会使得它们的轨道变得不稳定。

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Mr. Hurd broughttight fiscal discipline to the computer giant and turned it into one of themost reliable performers in the technology sector.

Hurd把严格的财务纪律引入了惠普，并把惠普打造成了技术领域最稳定的企业之一。

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But as the U.S. economy sputters and companies transfer their IT needs from the desktop to virtualized data centers and to the Web, one computer giant is moving its enterprise products in a new direction: slimmer and cheaper.

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The whole personal computer era can be seen as one giant triumph of dis-integration, as IBM's circuit-boards-to-boxes-to-software mainframe business gave way to the layered computer industry we see today: Intel making the electronics, Dell the boxes and Microsoft the software.

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The problems this week involve one piece of the giant ongoing overhaul, the new dispatch computer system, rolled out Wednesday on the first hot day of the year, when emergency calls usually spike.

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