n.

1. 提升，晉級[U][C]
2. 促進，增進；發揚；提倡[U][（+of）]
3. （企業等的）發起，創建[U]
4. （商品等的）促銷，推銷[U]
5. 推銷運動[C]
   They're planning a big promotion for their new washing powder.

   他們正籌劃舉辦一次新款式洗衣粉的大促銷行動。

n.

1. activity that supports or encourages.
2. the publicizing of a product or venture so as to increase sales or public awareness; a publicity campaign.
   ▸ (promotions) the activity or business of organizing such publicity.
3. the action of raising someone to a higher position or rank.
   ▸the transfer of a sports team to a higher division of a league.