one-off
[ADJ, NOUN]
1. 一次性的
A one-off thing is made or happens only once.
ADJ. 形容词
one-offs
1. [C 可数名词] 一次性事物
You can refer to something as a one-off when it is made or happens only once.
双语例句
例：Our survey revealed that these allergies were mainly one-offs.
我们的调查显示，这些过敏大多是一次性反应。
NOUN. 名词
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