校勘

例句：

1. 1. The author has made several changesto the manuscript.
   作者对手稿进行了几次修改。
2. 2. Before publishing, it is important tocheck for errors in the text.
   在出版之前，检查文本中的错误是很重要的。
3. 3. Afterreading the book, I noticed a fewtypos that needed correction.
   读完这本书后，我发现有几个拼写错误需要更正。