例句
Bring a light jacket, but heavy boots are unnecessary.
带一件薄外套吧，但厚靴子就没必要了。
Clear instructions can prevent unnecessary delays and help public services operate more efficiently.
清晰的指引可以避免不必要的延误，帮助公共服务更高效地运作。
常用搭配
- unnecessary expense｜不必要的开支
- unnecessary stress｜不必要的压力
- avoid unnecessary delays｜避免不必要的延误
词形与相关词
necessary (adj.) · unnecessarily (adv.) · necessity (n.)
用法提示
表示“没必要做”可用 it is unnecessary to do。