line by line scan

例句：

1. 1.The engineer was instructed to line by linescan the report for errors.
   工程师被指示逐行扫描报告以查找错误。
2. 2. Beforefinalizing the project, we need toline by line scan all the details.
   在最终确定项目之前，我们需要逐行检查所有细节。
3. 3. The teacher asked the studentsto line by line scan their homework beforeclass.
   老师要求学生们在课前逐行检查他们的家庭作业。