The effects of policy changes are often more nuanced than simple economic models suggest.
政策变化的影响往往比简单的经济模型所暗示的更为微妙。
Paper has been the carrier of human knowledge for centuries. Our duty is to ensure it continues for centuries more.
The intelligence of drones will change our way of life.
The best teacher is the one who suggests rather than dogmatizes, and inspires his listener with the wish to teach himself.