理解经济周期的关键在于认识到它们是对实际冲击的均衡反应。
煤炭行业必须发展以满足现代环境标准，否则将被淘汰。
Ah, make the most of what we yet may spend, Before we too into the Dust descend; Dust into Dust, and under Dust to lie, Sans Wine, sans Song, sans Singer, and—sans End!
Happiness is that state of consciousness which proceeds from the achievement of one's values.
I believe that if you'll just stand up and go, life will open up for you.
