Rat fink
01
裏切り者, 卑劣漢
a contemptible or despicable person, often used to describe someone who betrays others or engages in dishonest behavior
Disapproving
Informal
例
I ca n't believe he sold us out like that; he 's such a rat fink.
彼がそんな風に私たちを裏切ったなんて信じられない；彼は本当に裏切り者だ。
