发展过程简单来说就是：在每一代中，两个亲本性状都会出现，分离且不变。
The course of development consists simply in this; that in each generation the two parental traits appear, separated and unchanged.
Certification standards are meaningless without rigorous enforcement.
The challenge in theoretical computer science is not just to solve problems, but to understand the nature of problem-solving itself.
当科学开始研究非物质现象的那一天，它将在十年内取得比过去所有世纪更多的进步。