农民是我们食品系统的支柱,我们必须用正确的工具支持他们。
煤炭不仅仅是一种商品,更是现代文明赖以建立的基础。
你不由你的过去定义。
To understand the arithmetic of algebraic varieties is to understand the symmetries hidden within them.
心理学必须是一门功能的科学,而不仅仅是事实的科学。
I don’t want to be better than anybody else. I just want to be better than I was yesterday.