For years poisonous chemicals from this factory keeps feeding into the lake.

多年来这家工厂的有害化学物不断排放到这个湖里。

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If the factory keeps polluting the river, there will be no fish left for us to eat.

如果这家工厂继续污染这条河，那么我们就不会有鱼吃了。

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The factory timekeeper keeps account of the hours of work done.

工厂计时员记录工时。

《新英汉大辞典》

Landing gear comes from Messier-Dowty, whose Gloucester factory keeps nearly 1, 000 aerospace engineers in work.

BBC: Final deal to build Europe's A400M military plane

That keeps somebody hired at the Caterpillar factory, or someone not laid off, maybe even re-hired.

WHITEHOUSE: Opening Remarks by the Vice President at the Business Leaders Roundtable on the Recovery Act | The White House