n. a guardian or defender against theft or illegal practices or waste
n. a dog trained to guard property
n. 看门狗, 监察人
[化] 监控设备; 监视器
1. The government needs a watchdog to ensure companies follow the rules.
政府需要一个监督机构来确保公司遵守规则。
2. The animal shelter acts as a watchdog for the welfare of abandoned pets.
动物收容所充当了被遗弃宠物福利的监督者。
3. Journalists often serve as watchdogs in a democratic society.
新闻记者在民主社会中往往充当监督者。