When people or things are left unattended, they are not being watched or looked after.
例句
Never leave young children unattended near any pool or water tank...千万不能放任小孩呆在水池或水槽附近不管。An unattended bag was spotted near the platform at Gatwick...在盖特威克机场站的站台附近发现了一个无主袋子。
英汉词典释义
adj.
无人陪伴的;无人出席的;无人照顾的
She dashed through the door,leaving the bar unattended.她夺门而出,丢下酒吧不管。
英英词典释义
Adjective
1. not watched;
"she dashed out leaving the bar unattended""a fire left unattended"
2. lacking accompaniment or a guard or escort;
"unattended women""problems unattended with danger"
3. lacking a caretaker;
"a neglected child""many casualties were lying unattended"