可持续发展需要在经济增长与环境保护之间取得平衡。
I’m not a guy that’s going to let my game down.
模糊集的概念为构建一个在许多方面与普通集框架平行的概念框架提供了一个方便的出发点。
We cannot be sure of having something to live for unless we are willing to die for it.
You just once young but may be immature indefinitely.