inspection window

例句：

1. 1. Theengineer inspected the construction site before the start of the project.
   工程师在项目开始前检查了施工现场。
2. 2. The security guard kept an eye on the inspection window during the night shift.
   夜班保安在值班期间一直盯着检查窗。
3. 3. The technician opened the inspection window to check the equipment's condition.
   技术人员打开检查窗来检查设备的状况。