Sustainability isn't an option; it's our responsibility to the next generation.

数学的快乐来自于为理解而奋斗。

In the attosecond world, time is not a river but a series of snapshots waiting to be captured.

当陷入困境时，向别人解释你遇到的问题。通常情况下，仅仅是把问题描述出来，就会呈现出一个解决方案。让 "描述问题 "成为你排除故障的一个固定过程。