expense和cost在用法上有什么区别

expense

费用常见释义

英[ɪkˈspens]

美[ɪkˈspens]

n.

费用价钱花钱的东西开销开支花费（由雇主报销的）费用，开支，花销，业务费

vt.

向…收取费用把…作为开支勾销

例句

I thought it was understood that my expenses would be paid.

cost

费用常见释义

英[kɒst]

美[kɔːst]

n.

费用花费价钱成本(为做某事涉及的)努力，代价，损失诉讼费用

vt.

需付费价钱为使丧失使损失使付出努力使做不愉快的事估算成本

例句

Let's be practical and work out the cost first.

咱们实际一点儿，先计算一下成本费用