mean free time

例句：

1. 1. I need some meanfree time to catch up on my reading.
   我需要一些空闲时间来阅读。
2. 2. Theteacher gave us a break during the examto allow for some mean free time.
   老师在考试期间给了我们休息时间，以便我们有空闲时间。
3. 3. After work, sheenjoys spending her mean free time in thepark.
   下班后，她喜欢在公园里度过她的空闲时间。