一个好的抽象是捕捉概念的本质方面,同时忽略无关的细节。
A good abstraction is one that captures the essential aspects of a concept while ignoring the irrelevant details.
The harder the battle, the sweeter the victory.
天文学的历史是一部视野不断扩展的历史。
There is no surprise more magical than the surprise of being loved.