n.监视器

原形：invigilator复数：invigilators

The invigilator walked up and down the examination hall, ensuring students maintained proper exam conduct.
监考员在考试大厅里来回走动，确保学生们保持良好的考试行为。
Before the test began, the invigilator instructed all candidates to put their phones away.
在考试开始前，监考员指示所有考生将手机收好。
As the invigilator distributed the test papers, the students sat in tense silence.
当监考员分发试卷时，学生们紧张地坐在那里，一言不发。
The invigilator reminded everyone that they were not allowed to communicate with each other during the exam.
监考员提醒所有人，在考试期间不允许彼此交流。
Seeing a student作弊，the invigilator immediately approached and warned him against it.
看到一名学生作弊，监考员立即上前警告他不要这样做。
After the time signal was given by the invigilator, no more answers could be written on the exam paper.
在监考员发出时间信号后，考生不能再在试卷上作答。
The invigilator checked every candidate's ID before allowing them to enter the exam room.
监考员在允许每位考生进入考场之前都会检查他们的身份证件。
Once the exam finished, the invigilator collected all the answer sheets and sealed them in an envelope.
考试结束后，监考员收集了所有的答题纸并将它们密封在一个信封内。
During the break, the invigilator remained in the classroom to supervise any straggling students.
休息期间，监考员留在教室监督那些逗留的学生。
In case of any dispute or query, the invigilator is the final authority to make a decision.
如有任何争议或疑问，监考员具有最终决定权。