玉米是必需品,银子只是多余的。
Corn is a necessary, silver is only a superfluity.
今天对自由民主最严重的威胁不是来自共产主义或法西斯主义等敌对意识形态,而是来自内部——来自民粹主义的兴起和民主规范的侵蚀。
Sustainability isn't an option—it's the only path forward for any industry that wants to thrive in the future.
In mathematics, the simplest questions often lead to the most profound discoveries.