The future of coal lies not in its quantity but in how cleanly and efficiently we can use it.
劳动的自然价格是使劳动者能够生存并延续其后代所必需的价格,既不增加也不减少。
每一本书都是一段旅程,而每一段旅程都会让你有所改变。
The strongest ecosystems are those with diversity.
Do not feel envious of the happiness of those who live in a fool’s paradise, for only a fool will think that it is happiness.