煤炭不仅仅是一种商品,更是现代文明赖以建立的基础。
The obligation of subjects to the sovereign is understood to last as long, and no longer, than the power lasteth by which he is able to protect them.
I don't chase fame or fortune, only inner fulfillment.
The power of abstraction is that it allows us to ignore details that are not relevant to the task at hand.