The world is a book, and those who do not travel read only one page.
世界是一本书，不旅行的人只读了一页。
任何圆的周长与其直径的比率小于3 1/7但大于3 10/71。
我是那种会让你想抽更多烟的人。
除了诱惑，我什么都能抵抗。
We must balance the need for energy security with the imperative of reducing emissions.
做企业要有社会责任感，我们不仅要追求经济效益，更要关注食品安全和环境保护。
The PAC learning framework provides a formal way to quantify the learnability of a concept class.
The gods have not revealed all things from the beginning to mortals, but, by seeking, men find out better in time.