love interest:文中特指的是爱慕对象

　　Intention n. 意图；目的；意向；愈合

　　spoil the image vt.破坏；

　　Slip n. 滑，滑倒；片，纸片；错误；下跌；事故

　　引申

　　Slippery adj. 滑的；狡猾的；不稳定的

　　Slip of the tongue:舌头滑了一跤

　　Origin 俚语起源：

　　A slip of the pen was first reported to be used in the 1650s by a British man. He'd written a letter professing his unending love for Lady Catherine, his love interest. On opening the letter, she saw that he'd signed off the letter with the words "Within Love" instead of "With Love". When Lady Catherine related this to him days later, he'd laughed and said, "Oh, it was just a slip of the pen." Those around loved the expression and it caught on, and years later, around 1725, its sister phrase a slip of the tongue began to become more popular, as people also made mistakes while speaking not just while writing.

　　1650年代英国人首次使用 “A slip of the pen”。他写了一封信，表达他对爱慕对象Lady Catherine无限的爱。在打开信时，她看到他在信的末尾用了“在爱里”的字眼而不是“充满爱”。几天后，当Lady Catherine把这件事告诉他时，他笑了起来，说：“哦，那只是笔误。”人们很喜欢这个表达，这个俚语便流行起来。几年后，大约1725年的时候，它的姊妹篇“口误”开始变得越来越流行，因为人们不止在写作的时候犯错，说话时候也会。

　　Meaning：

　　1.an error in speaking in which the speaker says something unintentionally（不小心的口误）

　　2.an unintentional mistake in one's writing, such as incorrect spelling, choice of words, or meaning（不小心的笔误，比如拼写，用词及表达的意思等）

　　Example Sentences

　　1.I had no intention of saying that to her, it was a slip of the tongue.

　　我无意对她说那些，都是口误。

　　2.Slipping of the tongue may put you in trouble someday.

　　口误有时会让你陷入麻烦。

　　3.During the speech, one slip of the tongue spoiled the image of a great leader.

　　演讲中的一个口误会破坏一个伟大领袖的形象。

　　4.A slip of the tongue at the conference resulted in a big loss.

　　会议中一个口误会造成巨大的损失。