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。
The best research is driven by both curiosity and necessity.
找出你是否能信任某人的最好方法就是信任他们。
在家听从父亲的,出嫁则服从丈夫。