管子工叫不来，在更高的层次上，大夫更是难请。医生和牙医知道物以稀为贵，并以此指导自己的行为。
Plumbers will not come. Nor, at the higher level, will doctors. And doctors and dentists know their scarcity value and behave accordingly.
管子工叫不来，在更高的层次上，大夫更是难请。医生和牙医知道物以稀为贵，并以此指导自己的行为。
Plumbers will not come. Nor, at the higher level, will doctors. And doctors and dentists know their scarcity value and behave accordingly.
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