He has become their unofficial science teacher and takes them on unusual field trips to places like a toilet-paper plant, an aircraft carrier, and even the city dump for Seattle's East Side.

盖茨已经成为了他们非正式的科学老师，而且领着他们进行一些不同寻常的实地考察，比如去卫生纸的生产工厂，参观航空母舰，甚至去西雅图东边的城市垃圾站。

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Therefore, it is feasible to substitute conventional alkaline deinking by near-neutral sulfite deinking in paper plant.

因此，近中性亚硫酸钠脱墨代替常规的碱性脱墨在纸厂是可行的。

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My father is a worker, he works in a paper plant.

自己爸是个工人，在一间造纸厂工作。

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In those days, paper was made from strips of the papyrus plant.

VOA: special.2009.01.26

In those days,paper was made from strips of the papyrus plant.

VOA: special.2009.07.06

The tax also applies to bags made from paper, plant-based material, or natural starch.

BBC: Northern Ireland's new five-pence carrier bag tax

Andrew plans to employ at least 60 people by 2015 and is gearing up to set up a paper bag making plant.

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Its a 100-square-meter plant, based in a paper-pulp factory near Oslo Fjord and is expected to generate up to four kilowatts of power.

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