unnecessary expenses

基本解释

This is the best way to learn where you can cut some unnecessary expenses and help yourself avoid debt.
通过预算，你就能避免那些不必要的花费，避免使自己陷入债务，这是一种很好的避免债务的方法。
The “supersizing” of the cruise industry comes as other industries are downsizing and consumers are curbing unnecessary expenses.
其他产业不断减少规模，顾客也在控制不必要的开支，而游轮业却不断发展壮大。
As Americans make the transition from restaurant tables to supermarket aisles, they are making mistakes that translate into unnecessary expenses at the checkout lane.
而当美国人由在餐厅饭桌旁进餐转而在超市过道上徜徉时，他们做出了一些错误的选择，导致在款台多支付一些不必要的款项。

Since arriving at JPMorgan Chase through a merger in 2003, Dimon has spent hundreds of hours trying to rid the investment-banking division of unnecessary expenses and improve its performance.
FORBES: Magazine Article
Because of the coordination, the doctors better communicate, thereby avoiding unnecessary expenses such as repeated blood tests and CT scans while accomplishing a fuller knowledge for diagnosis and course of treatment.
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Those expenses are largely unnecessary if we can use digital technology to manage the flow of payments, which is commonplace in other industries, from financial services and banking to retail.
FORBES: Magazine Article