更新时间：2021-07-14 00:37:04作者：admin2
i think the "review class" can be used. for reference only
.Abbr. rev.（名词）缩写 rev.
A reexamination or reconsideration.
再调查：重新检查或重新考虑
A retrospective view or survey.
检查，检阅：回顾的观点或调查
A restudying of subject matter.
温习：对主题的重新研究
An exercise for use in restudying material.
作业，练习：在重新研究材料中使用的练习
This is a revision lesson.
This lesson is for revision.
This is a revision lesson.
This is revision lesson.
This lesson is for revision.
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