device used to observe, record or test sth
a pupil chosen to help the teacher in various
(of a person or machine) watch or listen to (sth) carefully over a certain period of time for a special purpose
make continuous observation of (sth)
"we are monitoring the air quality"
"the police monitor the suspect's moves"
I was going to make you a monitor next term.
出自： W. S. Maugham
The output from the analyser can be monitored with headphones.
出自：Times Review of Industry
Three weeks in Kleine Scheidegg, monitoring weather forecasts twice a day.
出自： D. Haston
The patient was connected to the monitor.
The nurse monitored the patient's condition carefully.