ad.

n.a public promotion of some product or service

同义词：adadvertisementadvertizementadvertisingadvertizingadvert

adv.in the Christian era; used before dates after the supposed year Christ was born

同义词：ADA.D.anno Domini

1. The company launched a new advertisement campaign to promote its product.
   该公司推出了一项新的广告活动来推广其产品。
2. I saw an advertisement for a new restaurant in the newspaper.
   我在报纸上看到了一则关于一家新餐馆的广告。