un·guard·ed
adjective/ʌnˈɡɑːdɪd/
/ʌnˈɡɑːrdɪd/
- not protected or watched
无防备的；无警戒的；无保护的 - The museum was unguarded at night.
这个博物馆夜里无人看守。 - an unguarded fire (= that has nothing to stop people from burning themselves on it)
无防护设施的火堆
- The museum was unguarded at night.
- (of a remark, look, etc.) said or done carelessly, at a time when you are not thinking about the effects of your words or are not paying attention
不小心的；不谨慎的；不留神的 - an unguarded remark
轻率的言论 - It was something I'd let out in an unguarded moment.
那是我一不留神说漏了嘴的话。
- an unguarded remark