The rules of art are not arbitrary; they are founded in reason and in the nature of things.
艺术规则并非武断；它们建立在理性和事物的本质之上。
Dairy products should be both nutritious and delicious.
The development of lithium-ion batteries was a team effort spanning decades.
Curiosity is the engine that drives scientific discovery.
心是脆弱的，但它也是我们最伟大力量的源泉。