mistake 
英 [mɪˈsteɪk]  美 [mɪˈsteɪk] 
n. 错误，失误

v. 误会，误解

例句：
He was often mistaken for his brother. 

人们常把他误认作他弟弟。

How strange to think that a man's life could hinge on such a trivial mistake. 

想想真是奇怪，一个人的一生竟然会为这样一个微不足道的错误所决定。

It was a mistake to buy those yellow shoes. 

买那双黄色的鞋子是个错误。

I'm sorry, I made a mistake. 

对不起，我犯了个错误。