汤姆的旧电脑在五年前还运行得很快，但渐渐地它变得非常慢。
Tom's old computer ran fast five years ago, but little by little it became really slow.
它运行得很快。
构建通常运行得很快(少于20秒)。
它们运行得很快，而能量却耗损得较少。
由于碎片整理操作可能运行得很快，特别对于小表更是如此，所以只能在很短的时间内看到碎片整理信息。
Since the defragment operation may run quickly, especially for smaller tables, the defragment information may be available for only a short period of time.
需快速运行的组件——grep和Perl——实际上都运行得很快，而算法和显示代码则尽量不产生干扰以保证运行速度。
The components that need to be fast — grep and Perl — are very fast, indeed, and the algorithm and display code stays out of the way enough to keep things fast.
谈到“实时计算(real - time computing)”，人们普遍存在一种误解，即认为“实时系统”一定就是运行得很快的系统，而且几乎只用于机械控制系统。
When people hear about real-time computing they often make the mistake of thinking that these have to be fast systems and are nearly always used for control of mechanical systems.
谈到“实时计算(real - time computing)”，人们普遍存在一种误解，即认为“实时系统”一定就是运行得很快的系统，而且几乎只用于机械控制系统。
When people hear about real-time computing they often make the mistake of thinking that these have to be fast systems and are nearly always used for control of mechanical systems.
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