expense of 和 expense for 区别?

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expenseof和expensefor区别?expenseof和expensefor区别?expenseof和expensefor区别?好难解释呃.个人感觉就是expenseofproducings

expense of 和 expense for 区别?
expense of 和 expense for 区别?

expense of 和 expense for 区别?
好难解释呃.
个人感觉就是
expense of producing something
expense for something
说不清楚.