•The very concept of free speech is unknown to them.他们没有言论自由的概念。

•It is very difficult to define the concept of beauty.很难给美这个概念下一个定义。

•I failed to grasp the film's central concept.我理解不到这部电影的中心思想。

•Kleenbrite is a whole new concept in toothpaste!Kleenbrite 是牙膏生产领域的一个全新概念！

•I don't think you have any concept of the pain you have caused her.我觉得你对自己给她造成的痛苦根本就一无所知。