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天空才是極限。

釋義：水一旦潑出去，就收不回來，后悔也來不及。??

Sustainability isn't a choice; it's our responsibility to the next generation.

煤炭造就了現代世界，我們有責任確保以智慧管理它的遺產。

"The past is always with us, and it shapes who we are and how we see the world."

Prophesying was the only human art that couldn't be improved by practice.