The modern automated sorting systems widely adopt the strategy of zone picking and order accumulation, where the or-der arrangement optimization problem exists.

现代自动分拣系统广泛采用先分区拣选后订单合流的分拣策略，其中存在着订单排序优化问题。

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At its 27 ground hubs, an automated sorting system relies on information picked up by cameras and laser scanners as packages whiz by at 540 feet per second.

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Increased communication via phone and cloud computing is another contributory factor, but the main reason for the decline is that mail sorting is becoming automated, with robots replacing people.

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Yet the chief reason for the decline, Shatkin says, is that mail sorting has become mostly automated, and robots are replacing people.

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