習(xí)語(yǔ)：
a private eye
講解：a private eye 是美國(guó)俚語(yǔ)，相當(dāng)于a private detective 指“私家偵探”。
支持范例：
The only way he could find out if they were having an affair would be to hire a private eye.
他能查出他們之間是否有曖昧關(guān)系的唯一辦法就是雇個(gè)私人偵探。
迷你對(duì)話：
A:What's his job?
他是做什么的？
B:He used to be a policeman.
他過去是當(dāng)警察的。
A:But Mrs.Smith hired him to find her lost son.
可史密斯太太雇用他尋找失散的兒子。
B:Yeah. He's a private eye now.
沒錯(cuò)，他現(xiàn)在是私家偵探了。
詞海拾貝：
used to do sth：過去常常做某事
lost son：失散的兒子