unattended
adj. 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
例句
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。
《柯林斯英汉双解大词典》
Young children should never be left unattended near a stretch of water.
绝不能让幼儿在水边无人看管。
Schools closed. Crops lay unattended.
学校被关闭了，庄稼无人照看。
