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Certification standards are the compass for responsible forestry.
A vision without action is merely a dream.
The development of computational complexity theory has shown us that not all problems are created equal.
I'm not afraid to fall, because I know I'll get back up.
战争是一种可憎的东西,但它也是灵魂的揭示者。
Writing is a way of preserving memory.
机智是一种在不树敌的情况下表达观点的艺术。