语言不仅仅是符号系统，还是具有社会和文化重要性的一组实践。
Language is not just a system of symbols， but a set of practices with social and cultural significance.
最可持续的皮革是使用寿命最长的皮革，减少了频繁更换的需求。
You have to be willing to fail, to be wrong, to start over again with lessons learned.
The future of democracy depends on the ability of democratic societies to reform themselves.
金钱不会改变人，而是揭露他们。
人生就像一场逆行的旅程，我也只是其中的一个过客。
模型检查是验证硬件和软件系统正确性的强大工具。
