global differential geometry

例句：

1. 1.The global warming is a serious problem that needs our attention.
   全球变暖是一个严重的问题，需要我们的关注。
2. 2. Globalization has brought many changes to our lives.
   全球化给我们带来了许多变化。
3. 3. The company's global expansion plans have been well received by investors.
   该公司的全球扩张计划受到了投资者的热烈欢迎。