形容词
名词
1. (通常指在抗议或集会中用两根竿子撑开的)横幅,标语
A banner is a long strip of cloth with something written on it. Banners are usually attached to two poles and carried during a protest or rally.
2. 在…的旗帜下;为了…的事业(或信仰)
If someone does something under the banner of a particular cause, idea, or belief, they do it saying that they support that cause, idea, or belief.