無(wú)限的概念不僅僅是一個(gè)數(shù)學(xué)抽象，而是一個(gè)物理現(xiàn)實(shí)。
The concept of infinity is not just a mathematical abstraction, but a physical reality.
The secret of getting ahead is getting started.
"There is no such thing as a single version of history; there are only perspectives."
宇宙是一個(gè)不斷變化和演變的地方，我們只是其中的一小部分。
The man who is fit to handle pig iron is not fit to handle the management of pig iron.