这句中有错吧?后面的“cannot afford”应该被动吧?为什么不用主动?如何改成正确的? the necessary cost of long-term traveling by plane cannot affordby most of salaried class. 长期乘坐飞机所必须的花费不能被大多数工薪阶层所解受。
这句话可以直接主动表达:Most of the salaried class(不确定工薪阶层这么说是否准确,应为working calss吧) cannot afford the necessary cost of long-term traveling by plane.(似乎long-term travelling by plane应为long-distance travelling)