这两册之间存在着微小的差别。
软盘和硬盘的引导是不同的。它们的运作有些微小的差别。
Floppy disks and hard disks boot differently. There are slight differences in the way they go about things.
游泳的基本装备，泳帽和护目镜都是基本相同的，只有微小的差别。
The swimming basics, cap suit and goggles are the same with some small variations.
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