n.

1. 提升，晋级[U][C]
2. 促进，增进；发扬；提倡[U][（+of）]
3. （企业等的）发起，创建[U]
4. （商品等的）促销，推销[U]
5. 推销运动[C]
   They're planning a big promotion for their new washing powder.

   他们正筹划举办一次新型洗衣粉的大促销行动。

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.