让孩子留在家里的最好方法是让家庭氛围愉快——并且把轮胎的气放掉。

想要画成方形或圆形就要遵循圆规和矩尺的法则，那么万事的功效就能显现出来。

Innovation in agriculture is not just about technology; it's about changing mindsets.

The opening up of new markets, foreign or domestic, and the organizational development from the craft shop and factory to such concerns as U.S. Steel illustrate the same process of industrial mutation—if I may use that biological term—that incessantly revolutionizes the economic structure from within, incessantly destroying the old one, incessantly creating a new one.