Obviously the design of charge systems would have to be influenced to some extent by what it is technically and economically feasible to measure, and this may move such systems a considerable distance from the ideal mentioned above.

• 明显地，收费制度的设计，在一定程度上受到了技术上和经济上可行性检测的影响，而这可能使这种体系与我们上述的理想相差很远。