특정 장소를 지키거나 위험을 감시하기 위해 배치된 파수꾼 또는 보초병
A person, typically a soldier or guard, whose job is to stand and keep watch to prevent unauthorized access or to warn of danger.
예문:
"The lone sentinel stood at the castle gate throughout the freezing night."
"Several sentinels were posted along the perimeter to detect any intruders."
질병의 발생이나 환경적 위험의 존재를 감시하기 위해 지표로 삼는 대상
An indicator, such as a specific population or animal, used to monitor the presence or spread of a disease or environmental hazard.
예문:
"The health department established a sentinel network of clinics to track flu outbreaks."
"Sentinel chickens are often used to detect the presence of West Nile virus in the area."
데이터 블록의 끝을 알리거나 특정 조건을 나타내기 위해 사용하는 특수 값
A special value or marker used to signal the end of a block of data or to indicate a specific condition in a program.
예문:
"The program uses a null character as a sentinel to identify the end of the string."
"A sentinel value of -1 was used to terminate the input loop."
어떤 장소에 보초를 세우거나 스스로 파수꾼처럼 지키다
To station a guard at a place or to act as a guard for something, often used figuratively to describe objects standing watch.
예문:
"Ancient oak trees sentineled the long driveway leading to the manor."
"The entrance was sentineled by two armed officers to ensure the VIP's safety."