2--But how does something slip from your mind? Slip (One's) Mind
 
1--Let's listen to Anna and Jonathan:
 
2--Look at this beautiful cake I made for the dinner party!
 
1--Oh no, is that tonight?
 
2--Yes! Didn't you make something?
 
1--No, it totally slipped my mind!
 
2--If you say something "slipped your mind" you forgot about it.
 
1--You can say this about an event, a task or a personal detail about someone, such as their name.
 
2--People often say words like "completely" or "totally" before this expression.
 
1--It totally slipped my mind! That completely slipped my mind!
 
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注解：
 
1.slip滑倒
2.detail详情
3.completely彻底地

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译文：

1--当你“滑倒”的时候，就意味着你摔倒了。
2--那么某事又是如何滑过你的大脑的呢？忘记
1--让我们听听看安娜和乔纳森是如何解释的吧：
2--看看这个漂亮的蛋糕，我为今晚的聚会做的！
1--不会吧，聚会是在今晚吗？
2--是的！你没有为聚会做点什么吗？
1--没有，我完全忘了！
2--倘若你说某事“slipped your mind”，那么表示你完全忘记做这件事了。
1--这个短语可用来形容事件、任务，或关于某个人的个人信息，比如他们的名字。
2--人们通常会在该短语前加上“彻底地”或“完全地”等类似的词汇。
1--我完全忘了！我彻底忘了！