banner

1. N-COUNT 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. (游行或集合用的) 横幅

A large crowd of students followed the coffin, carrying banners and shouting slogans denouncing the government. 一大群学生跟在灵柩的后面，举着横幅，高喊口号谴责政府。

2. PHRASE 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. 在…旗帜下; 在…名义下

Russia was the first country to forge a new economic system under the banner of Marxism. 苏联是第一个在马克思主义的旗帜下建立新的经济体制的国家。