Our wasterecycling project involving a lot of investigation and paperwork had been done by the end of last term.
我们的废物回收项目已经在上学期末完成了，其中包含许多调查研究和书面工作。
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The index assessed sustainability in 112 cities by looking at 18 environmental indicators — from air pollution to wasterecycling to mass transit — for the years 2004-2008.