书籍经过多次传抄，“鱼” 字可能写成 “鲁” 字，“虚” 字可能写成 “虎” 字。

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

Writing is a way of being happy.

用右手画圆形，左手画方形，不能同时画成

皮革鞣制的创新不仅仅是技术问题，更是在尊重工艺的同时推动其发展。

The best way to predict your future is to create it.

Never stop asking questions, because that's where discovery begins.

永远不要停止学习，因为世界从未停止变化。