error是误差的意思，而mistake则是错误的意思，区别可以从以下例子看出：
A 'mistake' is usually accidental， you know it is wrong. Otherwise， an 'error' is usually made due to the lack of knowledge and is more formal than 'mistake'. “错误”通常是偶然的，您知道这是错误的。 否则，“误差”通常是由于缺乏知识而造成的，而且比“错误”更正式。
