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縱然傷心，也不要愁眉不展，因為你不知是誰會愛上你的笑容。

The best time to plant a tree was twenty years ago. The second best time is now.

A sustainable future for coal depends on our ability to integrate cleaner practices without sacrificing the livelihoods of those who depend on the industry.

你必須成為你希望在世界上看到的改變。

你越努力，就越難放棄。