一次性费用 该怎么翻译？

One-time costs

one-time cost

one_time的意思是古代的,以前的. 二楼说的对

one-time charge

It is defined as: A one time charge is a charge against earnings that is unusual in nature and not expected to reoccur.

参考：http://www.investorglossary.com/one-time-charge.htm

one-off charge/fee/cost
one-off
adj.
一次性的
n.
一次性事物