出自晋·葛洪《抱朴子·应嘲》。虽说昆山的玉石很多,但不能救济原宪的贫穷。喻指毫无价值的空话。
You have to be able to admit when you're wrong and move on.
La realidad es solo una de las infinitas posibilidades que nuestra imaginación puede concebir.
The concept of reducibility is central to understanding the relationships between different computational problems.