Part 3 focuses specifically on swap space and how best to tune your VMM Settings to provide for optimum swap space configuration and performance.

第3部分主要介绍交换空间，以及如何最好地优化VMM设置，以提供最优的交换空间配置和性能。

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In America, the optimum density for the best use of road space is around 50 vehicles per lane-mile.

在美国，道路最佳使用效率的理想车辆密度大约是每车道英里50辆车。

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The four bucket seats offer optimum ergonomic features, yet are still built in a space-saving manner.

四桶座位提供最佳人工控制特点，但仍然是建在节省空间的方式。

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This time, the timing can't slip even by a few seconds, because then the SpaceX vehicle would end up in a less than optimum trajectory and lack essential fuel reserves to be able to catch up and dock with the space station.

WSJ: SpaceX's Pioneering Flight Plans