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The mind once enlightened cannot again become dark.
快乐不是因为拥有的多,而是计较的少。
书籍是飞机,是火车,是道路。它们是目的地,也是旅程。它们是家。
Every tree we plant today is an investment in tomorrow's clean air and healthy ecosystems.
The future of energy is low-carbon, and natural gas will play a vital transitional role.