名词
中文翻译：无人值守的时间
同义词：
['unoccupied time', 'unsupervised time例句：1. The library is usually crowded during the weekends', 'but on a weekday evening', "it's usually unattended time.（图书馆在周末通常很拥挤，但在工作日晚上通常是无人值守的时间。）"]
例句：
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1. The library is usually crowded during the weekends, but on a weekday evening, it's usually unattended time.
图书馆在周末通常很拥挤，但在工作日晚上通常是无人值守的时间。
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2. During the unattended time, the security guard was busy with his phone.
在无人值守的时间里，保安忙于玩手机。
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3. The children were playing in the park during the unattended time, enjoying their freedom.
孩子们在无人值守的时间里在公园里玩耍，享受着自由。