cost and social benefit 成本与社会效益
Yet good relationships are clearly a social as well as a personal benefit, while bad ones are likewise a private and public cost.
然而，良好的关系显然对一个社会以及个人有利，而坏的关系同样是个人和公共社会的成本。
They argue that the high metabolic and social cost of depression is actually benefit: depression is an honest, believable signal to others that something is desperately wrong.
他们认为高速新陈代谢和因为消沉带来的社会开销实际上具有其优点：消沉是一种诚恳的，可信任的信号，向他人表示自己绝对错了。
The result of paving the experimental road section showed that the fiber asphalt mixture had good usage effect, longer road usage life, lower maintenance cost, and better economic and social benefit.
试验路铺筑结果表明：纤维沥青混合料具有良好的使用效果，可延长道路使用寿命，降低养护成本，有较好的经济和社会效益。
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