自守形式的研究是数学思想统一性的反映。
Food security begins with resilient farming practices.
An excellent man; he has no enemies; and none of his friends like him.
You have to love before you can be relentless.
You cannot get through a single day without having an impact on the world around you. What you do makes a difference, and you have to decide what kind of difference you want to make.
可持续发展已不再是一种选择,而是我们对后代的责任。
组织规律支配着所有的心理过程