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原帖由 happycj 於 10-4-4 06:47 發表 RL means "reading level". It is a scale to show which grade the book is for. I think it is a US thing, as US likes to use a lot of metrics. http://www.hoagiesgifted.org/reading_levels.htm http://r ...
發表於 10-4-4 02:05
