自由不仅仅是摆脱枷锁，而是以尊重和提升他人自由的方式生活。

The interest of the behaviorist in man's doings is more than the interest of the spectator—he wants to control man's reactions as physical scientists want to control and manipulate other natural phenomena.

Collaboration across the supply chain is key to driving efficiency and reducing waste.

一个力学问题只有被简化为代数问题时才算解决。