noun🔗Share捕鼠器，捕鼠狗 Anything which catches rats, especially a dog trained to catch them; a rat terrier."The farmer kept a Jack Russell terrier; it was an excellent ratter and kept the barn free of rodents. "那位农夫养了一只杰克罗素梗犬，它是个捕鼠能手，让谷仓里没有老鼠。animaljobChat with AIVocabulary GamePractice Reading
noun🔗Share叛徒，告密者。 One who rats; a traitor; a deserter."After leaking the company's secrets to a competitor, John was known as a ratter by his former colleagues. "在把公司的秘密泄露给竞争对手后，约翰被以前的同事们视为叛徒。characterpersonmoralChat with AIVocabulary GamePractice Reading
