释义:能认清时代潮流的人才是俊杰,懂得随机应变的人方为英豪。
采矿效率不仅仅是削减成本,而是在减少浪费的同时最大化价值。
"Life is the bitch and death is her sister."
Free education is abundant, all over the Internet. It's the desire to learn that's scarce.