Internal recovery refers to the shorter periods of relaxation that take place within the frames of the work day or the work setting in the form of short scheduled or unscheduled breaks, by shifting at physical resources required for the initial task are t
2018年12月六级真题(第一套)阅读 Section B
柯林斯高阶英汉双解学习词典释义
ADJ
计划外的;出乎意料的
An unscheduled event was not planned to happen, but happens unexpectedly or because someone changes their plans at a late stage.