External recovery refers to actions that take place outside of work.
外部恢复指的是工作之外的活动。
2
External recovery refers to actions that take place outside of work—e.g. in the free time between the workdays, and during weekends, holidays or vacations.
外部恢复指的是发生在工作之外的行为，如在工作日里的空闲时间、周末、节假日或假期。
3
One type of external evidence that may shed light on the transmission of Roman texts is the availability of a work in the Middle Ages, when many classical texts were circulated.