be left unattended
US /bi left ˌʌn.əˈten.dɪd/
UK /bi left ˌʌn.əˈten.dɪd/
短语
无人看管, 被闲置
to be not being watched or looked after
示例:
•
Baggage must not be left unattended at any time.
行李在任何时候都不得无人看管。
•
The fire should never be left unattended.
火源绝不应无人看管。