up time

漢語翻譯

英文解釋：

名詞 up time:

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

例句：

1. Activity, such as schoolwork or office work, meant to take up time but not necessarily yield productive results.
   無生產性工作，機關工作占用時間但不必要獲得生產結果的活動，如學校工作或機關工作