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유독화학물질의 오염이 없어야 한다는 것만이 아니고 토양에서 사는 미생물을 돌보고, 원유로 만든 순환 불가능한 투입(nonrenewable inputs)과 에너지 자원을 최소화하여 환경과 자연생태계를 보존하는 의미를 포함하고 있기 때문에 원유에서 원료를 추출...

waste. wrapper I emptied the sweet wrappers from the ashtray. preservation We need to preserve the forest... nonrenewable Nonrenewable energy sources come out of the ground as liquids, gases and solids. unsanitary Discharge of raw sewage...

resources is limited. These resources are called 천연자원 이 수동태 구문에서는 ‘행위자’가 불분명하여 생략됨. "nonrenewable." For example, the earth has limited deposits of coal, natural gas, 재생 불가능한 매장량, 매장물 and oil...

So what I'm saying is that entrepreneurship is where it's at. We are at the end of the first industrial revolution -- nonrenewable fossil fuels, manufacturing -- and all of a sudden, we have systems which are not sustainable. The...