森林面临的最大威胁不是砍伐,而是漠不关心。
我不考虑过去或未来。我专注于现在。
The rocks we extract today build the infrastructure of tomorrow.
Profit and purpose are not opposites—they're the twin engines of 21st century business.
代数群的算术是理解朗兰兹猜想的关键。