notion 
英 [ˈnəʊʃən]  美 [ˈnoʊʃən] 
n. 概念，见解，打算

例句：
The notion that the earth is flat was rejected long ago. 

对地球是扁平的这一观念很早便予以驳斥了。

We each have a notion of just what kind of person we'd like to be. 

关于想成为什么样的人，我们每个人都有自己的想法。

I reject absolutely the notion that privatization of our industry is now inevitable. 

我坚决反对认为我们的工业私有化不可避免的看法。

He had only the vaguest notion of what it was all about. 

对于这到底是什么的问题，他只有个最模糊的概念。

I have a notion that he's not as happy as he seems. 

我有种感觉，他并不像他看起来那么高兴。