No matter how merchandize the production , the time which is needed by society all can be allocated to the social necessary labor - time 社会是按照在各种产品上需要满足程度相同的原则，在社会可支配的劳动时间中分配各种产品的社会必要劳动时间。
Because they are better off than any past generation , with a collective annual disposable income approaching us $ 1 trillion , boomers have the ability to provide for their grandchildren financially 因为婴儿潮比过去任何世代更富有（每年可支配的集体收入将近一兆美元） ，他们有财力资助孙子。
Carpooling can limit use of personal vehicle for daily commuting , reduce air pollution , save time by using high occupancy vehicle lane and provide useable time for riders ? read , sleep , work and talk 拼车可以减少用于日常通勤的私车的数量，减轻空气污染，使用拼车专行道可以节省时间，而乘车人也有了可支配的时间，用来阅读、睡眠、工作和谈话。
