Parents wonder why the streams are bitter, when they themselves have poisoned the fountain.

The power elite is composed of men whose positions enable them to transcend the ordinary environments of ordinary men and women; they are in positions to make decisions having major consequences.

最好的设计源于理解使用者的需求。

When you fail, you learn. When you succeed, you learn even more.

Safety production is the lifeline of mining enterprises and must be consistently emphasized.

数学是宇宙书写的语言。