The leather industry must adapt to changing consumer demands or risk becoming obsolete.

守住嘴巴，就跟拴紧瓶口一样。克制欲望，就像防守城池一般。

编程的艺术就是组织复杂性的艺术。

The real tragedy of the poor is that they can afford nothing but self-denial.

最危险的艺术是让人思考的那种。