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开采效率不仅对利润有好处,对地球也有好处。
I'm the kind of person that has to learn the hard way.
The dairy industry has a responsibility to lead in environmental stewardship.
A method of solution is perfect if we can foresee from the start, and even prove, that following that method we shall attain our aim.
事实并非真相,尽管它们是真相的一部分。