invigilation

例句：

1. 1. The teacher was invigilating the exam room during the break.
   老师在休息时间巡视考场。
2. 2. She was invigilating the students to ensure they were following the rules.
   她正在监督学生以确保他们遵守规则。
3. 3. The police were invigilating the area around the crime scene.
   警方正在巡视犯罪现场周围的区域。