one-off
🇺🇸
/ˌwʌn ˈɔːf/
🇬🇧
/ˌwʌn ˈɒf/
noun
R
An event or object that occurs or is created only once, not part of a regular pattern or series.
The charity event was a one-off occasion, and it raised a lot of money for a good cause.
这次慈善活动是一次性的，它为一个好事业筹集了很多钱。
translation
一次性的
词形变化
Plural
one-offs