Besides, a growing number of factory have also accounted for air pollution in big cities.

此外，越来越多的工厂也导致了大城市空气污染。

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In Taji, north of Baghdad, the number of factory workers still being held by gunmen who seized them Wednesday is unclear.

在巴格达以北的塔吉，星期三晚上被枪手绑架并一直扣押的工厂工人数目仍然不清楚。

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In a large number of cases factory workers earn as much, if not more, than their middle-class supervisors.

在很多情况下，工厂工人的收入与他们的中产阶级主管的收入相比，如果不是更高也会相等。

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Alexon's move to pull out of manufacturing in Wales is the latest in a number of factory closures and cutbacks to have hit the Welsh economy during the past year.

BBC: Factory announces 190 job losses

On Wednesday morning, he and a number of factory managers ordered nervous workers into the building shortly before the collapse, according to the neighbor, who was present at the scene, and local press reports.

NPR: Bangladesh Owner Is At Nexus Of Politics, Business

But additive manufacturing is only one of a number of breakthroughs leading to the factory of the future, and conventional production equipment is becoming smarter and more flexible, too.

ECONOMIST: A third industrial revolution | The