But the worst part is that print version of textbooks are constantly undergoing revisions.
出自-2013年6月閱讀原文
英語六級真題
The revisions come at a time when green marketing is on the rise.
出自-2016年6月閱讀原文
柯林斯高階英漢雙解學習詞典釋義
N-VAR
修訂;修改;修正;校訂
To make a revision of something that is written or something that has been decided means to make changes to it in order to improve it, make it more modern, or make it more suitable for a particular purpose.