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通常的燃料电池由氢气驱动，但此项研究的目的旨在使得工厂能够直接从废料(例如乳清)中把有机物质转化为电能。
Usually fuel cells run on hydrogen, but the aim of the research is to allow factories to recover energy from waste products like whey by converting organic materials directly into electricity.
但是我们仍然能够看到树枝间悬挂着的吊床，被风轻轻摇摆着，我还看到那些曾经带我去过废料场的女孩们正蜷缩在吊床里。
But we were able to catch sight of some hammocks hanging from branches, rocked by the wind, and I saw, nestling in them, the girls who had led us to that place.
这项技术的益处除了会产生较少的废料，还能够使客户定制零件的加工变得更加容易。
The gains include less waste and the ability to make bespoke parts more easily.
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