这本是我的书，《聆听音乐》，现在已经是第五版了。
It is my own textbook, "Listening to Music", now in the fifth edition.
该报告从2012年开始出版发行，今年已经是第五版了。
It is the fifth version of the research report, which was first published in 2012.
该报告从2012年开始出版发行，今年已经是第五版了。
It is the fifth version of the research report, which was first published in 2012.
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