attested copy

例句：

1. 1. The original document was lost but the attested copy is now in our archives.
   原始文件丢失了，但被证实的副本现在在我们的档案中。
2. 2. The teacher asked us to take notes on the attested copy of the lecture.
   老师让我们在被证实的讲座副本上做笔记。
3. 3. The attested copy of the book has been sent to all students for reference.
   这本书的被证实副本已经发送给所有学生作为参考。