rat

老鼠、鼠

A rat ran across the alley and disappeared behind the trash cans.

一隻老鼠竄過巷子，消失在垃圾桶後面。

卑鄙小人、混帳口語，貶義

You lied to your own sister, you rat.

你連自己的妹妹都騙，真是個卑鄙小人。

告密者、抓耙仔、叛徒口語，貶義

Nobody in the neighborhood talks to him because he's a rat.

附近沒人願意跟他說話，因為他是個告密者。

告密、出賣、打小報告口語，常與 on 連用

He ratted on his coworkers to keep his own job.

他為了保住自己的工作，出賣了同事。

捕鼠、抓老鼠

The farmer keeps two terriers for ratting in the barn.

那位農夫養了兩隻梗犬在穀倉裡抓老鼠。