costs
释义:n.费用;花费;价钱;成本。
例句:
Health insurance costs are eating up his income.
医疗保险费用花掉了他大量的收入。
fee
释义:n.专业服务费;咨询费。
例句:
There's a postage and packing fee in addition to the repair charge.
除修理费之外还有邮寄和包装费。
costs用法:主要用作及物动词。多数情况下 cost 是不可数名词。
fee用法:是可数名词,一般指小费,会费等服务费用。