1ADJ [ADJ after verb, verb-link ADJ, ADJ n]没有防备的;无人看管的 If something is unguarded, nobody is protecting it or looking after it. 没有防备的;无人看管的
I should not leave my briefcase and camera bag unguarded.
我不该把我的公文包和相机包留在那儿无人看管。
2ADJ [usually ADJ n]轻率的;不留神的 If you do or say something in an unguarded moment, you do or say it carelessly and without thinking, especially when it is something that you did not want anyone to see or know. 轻率的;不留神的
The photographers managed to capture Jane in an unguarded moment.
摄影师抓拍到了简不经意的瞬间。
He was ambushed by a reporter into an unguarded comment.