Topology is the study of the properties of a figure that are unchanged by any deformation.

最好的故事是那些为读者想象力留出空间的故事。

我不会坐在这里说我是个榜样什么的，但我确实认为我有责任。

Traceability in seafood isn't just good ethics, it's good business.

Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.

最好的领导者是那些多听少说的人。

教师的爱是滴滴甘露，即使枯萎的心灵也能苏醒；教师的爱是融融春风，即使冰冻了的感情也会消融。