scan diagonal

例句：

1. 1. The engineer scanned the report for errors.
   工程师检查报告以找出错误。
2. 2. She scanned the room with her binoculars.
   她用望远镜扫描房间。
3. 3. The detective scanned the crime scene for clues.
   侦探在犯罪现场寻找线索。