nonessential

We decided to cut all nonessential expenses from the budget.

用法提示：此处 nonessential 作形容词，修饰 expenses，表示“非本质的；不必要的”。

The report contains a lot of nonessential information that we can skip.

用法提示：nonessential 作为形容词修饰 information，意为“非必要的”。

During the emergency, only nonessential staff were asked to leave the building.

用法提示：nonessential 在此作形容词，修饰 staff，表示“非关键的；不重要的”。