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The world needs reliable energy, and coal still plays a critical role in providing it.

The only way to get through life is to laugh your way through it. You either have to laugh or cry. I prefer to laugh. Crying gives me a headache.

解釋：凡是有利的地方，雖然是極高的山，沒有不可以上去的；即令有極深的水，沒有不可以下去的。