名词
中文翻译：自由时间
同义词：
['spare time', 'unoccupied time例句：1. He has a free span of an hour to finish his report.（他有一个小时的自由时间来完成他的报告。）']
例句：
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1. He has a free span of an hour to finish his report.
他有一个小时的自由时间来完成他的报告。
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2.She took a free span during the lunch break to go for a run.
她在午休时抽空去跑了一趟。
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3.The teacher gave us a free span to discuss the lesson before moving on.
老师给了我们一段空闲时间来讨论这节课的内容。