unattended，英语单词，主要用作为形容词，用作形容词译为“无人看管的，无人照料的；未被注意的，未被处理的；（会议等）无人出席的”。
短语搭配
unattended system 无人监视系统
unattended pumper 自动抽油井
unattended light 无人看守的灯塔
单词用法
柯林斯英汉双解大词典
unattended /ˌʌnəˈtɛndɪd/
1.ADJ When people or things are left unattended, they are not being watched or taken care of. 无人照管的
例：
Never leave young children unattended near any pool or water tank.
千万别把小孩留在水池或水箱旁而无人看管。
例：An unattended backpack was found in a rubbish pile.
在垃圾桶里发现了一个无人看管的背包。