But the problems can grow much faster than you can get a performance boost out of the computer.

对，电脑运行速度是很快,但是问题的规模增长的。

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And that was only possible because, besides using the sea, the shipping lanes for travel, which was much faster than overland travel, the Romans maintained roads.

之所以能达到这个数字，原因之一是走海路，用海洋航路运输，比陆路快得多，另一个原因就是修路。

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It's growing very, very quickly, much faster than the world average.

变化非常迅速，比世界平均速度更快。

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