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The dairy industry must lead in environmental stewardship.
乳制品行业必须在环境管理方面发挥领导作用。
"The act of writing is an act of optimism. You would not take the trouble to do it if you felt it didn't matter."
这个世界是最好的可能世界。
It is indeed an opinion strangely prevailing amongst men, that houses, mountains, rivers, and in a word all sensible objects, have an existence, natural or real, distinct from their being perceived by the understanding.