watch·dog /-ˌdɔg/
看門狗,忠實的看守人
watchdog
監視器
watchdog
監視
Watch·dog n. A dog kept to watch and guard premises or property, and to give notice of the approach of intruders.
◄ ►
watchdog
n 1: a guardian or defender against theft or illegal practices or
waste; "she is the global watchdog for human rights
abuses"
2: a dog trained to guard property [syn: guard dog]