up time

汉语翻译

英语解释：

名词 up time:

1. a period of time when something (as a machine or factory) is functioning and available for use
   同义词：uptime

例句：

1. Activity, such as schoolwork or office work, meant to take up time but not necessarily yield productive results.
   无生产性工作，机关工作占用时间但不必要获得生产结果的活动，如学校工作或机关工作