"Freedom is not worth having if it does not include the freedom to make mistakes."
防范化解金融风险是金融工作的永恒主题。
离散数学和连续数学之间的相互作用是一些最有趣的问题所在。
The improvement of understanding is for two ends: first, our own increase of knowledge; secondly, to enable us to deliver that knowledge to others.