ratter

The farmer bought a small terrier that was an excellent ratter, catching dozens of mice in the barn.

农夫买了一只小型梗犬，它是一只出色的捕鼠犬，在谷仓里捉了几十只老鼠。

用法提示：此句中ratter用作名词，指擅长捕鼠的狗，体现了其“捕鼠者”含义。

As a ratter, the old cat had no equal, but she was too gentle to harm the kittens.

作为一只捕鼠猫，这只老猫无人能及，但她太温和了，不会伤害小猫。

用法提示：此句中ratter用作名词，指善于捕鼠的猫，扩展了“捕鼠者”的含义。

The politician was denounced as a ratter after he switched parties to save his career.

这位政治家被谴责为叛徒，因为他为了保住自己的职业生涯而转换了党派。

用法提示：此句中ratter用作名词，指背叛者，体现了其“叛变者”含义。