N-VAR
（必要的）费用，开支
Outlay is the amount of money that you have to spend in order to buy something or start a project.
例句
Apart from the capital outlay of buying the machine, dishwashers can actually save you money...
除了购置所用开支，洗碗机实际上能为你省钱。
A beginner could really enjoy the hobby for an outlay of between ￡100 or ￡120 a month.
初学者只需每月花上100到120英镑便能真正享受到这种爱好带来的乐趣。