为什么我们会知道法向量？

Why would we ever know a normal vector?

还有什么原因你会知道法向量？

Why else would you know a normal vector?

“小炒熬”无论菜品和制作方法都符合庄子“返朴归真、道法自然”的哲学美学原则。

"Sprinkle endure" both food and the production methods meet Zhuangzi "Nature, the principles of" philosophical aesthetic principles.

从苏丹共和国达尔富尔地区的实践看，国际人道法亟待为国内武装冲突下的平民提供必要的保护。

From the practice of the Darfur State of Sudan, it is necessary for international humanitarian law to provide protection for civilians in domestic armed conflicts.