n. a person who keeps a devotional vigil by a sick bed or by a dead body
n. 看守人, 守望者, 哨兵
1. The watcher kept an eye on the security cameras all night.
看守者整晚监视着安全摄像头。
2. She is a wildlife watcher who loves observing birds in their natural habitat.
她是一位野生动物观察者，喜欢在自然栖息地观察鸟类。
3. The movie had a watcher who recorded every detail for the review.
这部电影有一个观众记录了每一个细节以便撰写评论。