unsafe

adjective

/ʌnˈseɪf/

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(of a thing, a place or an activity东西、地方或活动) not safe; dangerous不安全的；危险的
- The roof was declared unsafe.已宣布屋顶有安全隐患。
- It was considered unsafe to release the prisoners.释放这些囚犯被认为是危险的。
- unsafe sex (= for example, sex without a condom)不安全的性行为
(of people人) in danger of being harmed身处险境的
- He felt unsafe and alone.他感到既危险又孤单。
(British English, law法律) (of a decision in a court of law法庭判决) based on evidence that may be false or is not good enough证据不可靠（或不足）的
- Their convictions were declared unsafe.先前给他们的定罪已经宣布证据不足。

opposite safe