解释：高明的医生注重预防疾病，而不是等到疾病发生后再去治疗。

For every dollar you spend purchasing something substantial， expect to pay a dollar in repairs， maintenance， or disposal by the end of its life.

政治语言的设计是为了让谎言听起来真实，让谋杀显得体面，并给纯粹的虚无以稳固的表象。