I'm the reason your hands won't work.
Pain is the absence of pleasure, pleasure is the absence of pain.
Computer programming is an art, because it applies accumulated knowledge to the world, because it requires skill and ingenuity, and especially because it produces objects of beauty.
The most important thing in science is not to solve problems, but to ask the right questions.
食品安全是水产养殖的生命线，任何时候都不能放松。
Innovation is the market introduction of a technical or organizational novelty, not just its invention.