They may not store all the information needed or they may not be able to export all the information needed (my experience is that some of these low-cost packages are less open than high-end packages).

它们可能并没有把需要的信息都存储起来，或者无法把所有需要的信息都导出来(根据我的经验，低价软件包比高端的开放性更差)。

youdao

Because extents are allocated as needed, the extents of a segment may or may not be contiguous on disk.

由于段中区的分配是按需进行的，所以段中的区在磁盘上可能不是连续的。

youdao

The regulator also intends to use the market studies to advise the Commerce and Employment Department on whether or not further regulation may be needed in certain areas.

BBC: Guernsey grocery, gas, oil and fuel prices to be reviewed

Plus, procedures may be performed that were not needed or could have been avoided.

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Or the needed dose may be high enough that it would require pills, not just the occasional glass of wine.

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