Because you can come up with an infinite number of values but if you have a finite amount of space and certainly a computer has a finite amount of disk space or RAM, you have to make approximations.

你可能会碰到一些无限的值,如果你只有有限的空间,废话，电脑当然只有一个有限的磁盘空间,或RAM，我们得做一些近似处理。

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Sehat says he knew he could make chips for processing disk data that were smaller, cooler-burning and speedier than chips then on the market.

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They keep the PC patched, keep its disk drive in good order, make sure its drivers are up-to-date, and generally make it run smooth as silk.

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Two thousand years hence, Sherwood says hypothesized collections of Asteroidal materials congregating at the Earth-Sun L4 and L5 gravitational equilibrium points would make for building materials to construct a large rotating pancake disk capable of housing thousands of people in the comfort of a free-breathing atmosphere and some form of artificial gravity.

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