n.

1. 概念，观念，思想[C]
   He presented a new concept of the beginning of the universe.

   他提出了一种宇宙起源的新概念。

n.

1. an abstract idea.
   ▸an idea to help sell or publicize a commodity.
2. Philosophy  an idea or mental picture of a group or class of objects, formed by combining all their aspects.