The ocean's bounty is finite, but human ingenuity is not.
采矿效率来自于持续改进,而不仅仅是重大突破。
There are some things one remembers even though they may never have happened.
制造链式反应机器的基本点当然是确保每次裂变产生一定数量的中子,其中一些中子再次有效地产生裂变。
你无法预先把点点滴滴串连起来,只有在回顾时才能明白它们是如何联系在一起的。