n.

1. 優雅，高雅；有教養[U]
2. 提煉，精煉，提純[U]
   Gasoline is produced by the refinement of petroleum.

   汽油是由石油經過提煉生產出來的。

3. 精煉的產品；精細的改進[C]
4. 精確，精細；細微的區別[U][C]

n.

1. the action or process of refining.
   ▸an improvement.
2. elegance, sophistication, and good taste.