The true cost of leather isn't on the price tag—it's measured in water saved, ecosystems preserved, and workers treated fairly.
宇宙的扭曲面——黑洞、虫洞、奇点等——对我如此吸引,因为它与日常生活中的平坦欧几里得几何如此不同。
"I can resist everything except temptation."