Sorting collection is a key measure to control waste pollution and recycle regeneration resource.

实施生活垃圾分类收集，是治理垃圾污染、从垃圾中回收再生资源的关键措施。

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However, one very common case where inequalities are implicitly extremely useful is in sorting collection, usually lists or list-like custom collections.

但是，在一种常见的情况下，不等性是非常有用的；那就是对集合进行排序时，通常是对列表或与列表类似的定制集合进行排序。

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The strikes will see each section of the company, from the sorting and collection centres to those who make the deliveries, walking out for two separate 24-hour strikes over two weeks.

BBC: NEWS | Business | Royal Mail strike gets under way

The real value is provided by companies that can make big data collection sorting and interrogation as simple as possible so that IT is no longer the bottleneck.

FORBES: Big Data Requires a Big, New Architecture

That said, sorting out the jurisdictional tax-collection issues could be a great opportunity for a Net-based business service.

FORBES: Readers Say