imposture
[im'pɔstʃə]
n.冒名顶替, 欺骗
例句与用法：
The impostor traveled on a false passport.
那个伪装者用一本假护照旅行。
The impostor has been shown up.
那个骗子被揭露出来了。
He said he was a doctor, but it subsequently emerged that he was an impostor.
他说他是位医生，但后来却发现他是个骗子。
He is an impostor.
他是一个骗子。
The impostor was finally discovered.
这个冒名顶替者终于被发现了。
详细释义：
n.
1. 诈欺
2. 冒牌