Rat fink
n. 卑鄙的人
?? 詞語組成解析
rat
[r?t]
n. 大老鼠;似鼠動物;<非正式>鼠輩，卑鄙小人;
vi. 捕鼠;<俚>背叛，告密;
n. 破壞罷工的人, 告發人, 密告人\\n[法] 內奸
??? 情景例句
so I wouldn't lose them.
免得我弄丟了。
You were late again this morning. I think you had better start being on time.
你早晨又遲到了，我想你最好開始守時。[托福]
I'll check back with by head office for you.
這個我回頭會跟總公司查核一下。