The fact that fat oils from vegetable sources can be used may seem insignificant today, but such oils may perhaps become in course of time of the same importance as some natural mineral oils and the tar products are now.
植物油脂肪油的使用在今天看来可能微不足道，但这些油或许会随着时间的推移变得像某些天然矿物油和焦油产品一样重要。
每个人都必须有一个改变他们的想法，或一本书，或一个词，或一个时刻；如果没有，他们的生命就被浪费了。
Customer satisfaction is the ultimate measure of a company’s success.
量子理论的本质是否认用经典术语完整描述原子现象的可能性。
做人就是与自己发生冲突。