The word 'didn't' is a contraction of the words 'did not'. When using it in a sentence with the words 'mean to' you are informing someone that you did something you regret or are sorry for. This could have been a physical, mental or verbal action.

'didn't'这个词是'did not'的缩写形式，当在一个句子中它和'mean to'一起使用的时候，你就是要告诉别人你做了一些让你后悔和抱歉的事情，这可能是一个身体上的、心理的或口头的行动。

Here are some examples: 这里有一些例子： 

"I didn't mean to hurt your feelings."

 我没有要伤害你感情的意思。

"I didn't mean to call you so late."

 我不是故意这么晚给你打电话的。

"I didn't mean to lie about what happened."

 关于发生了什么我并没有要故意撒谎。

"I didn't mean to embarrass you."

 我不是故意让你难堪的。

"I didn't mean to stay out so late."

 我不是故意在外面待到这么晚的。

"I did not mean to say those things."

 我不是故意要说那些事情的。

"I did not mean to leave you out."

 我不是要离开你的意思。

"I did not mean to make you confused."

 我不是故意让你困惑的。

"I did not mean to think you were involved."

 我并没有把你考虑进去。

"I did not mean to cause trouble."

 我不是要惹麻烦。