Although you can allocate additional extents, the blocks themselves are allocated
separately. If you allocate an extent to a [B]specific instance[/B] , the blocks are immediately
allocated to the free list. However, if the extent is not allocated to a specific instance,
then the blocks themselves are allocated only when the high water mark moves. The
high water mark is the boundary between used and unused space in a segment.
这段是CONCEPTS的第二章的内容,这段我始终无法翻译明白,这里的INSTANCE到底翻译成什么哪?翻译成OBJECT???
请各位指教
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