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单词辨析：
普通用词，指代表某一国家、组织等的旗帜；在体育运动中常指信号旗或标示位置的标志旗。
the free kick near the corner flag
角旗附近的任意球
The national flag is flying in the air.
国旗在空中飘扬。
Do you know the history and meaning of the American flag?
你知道美国国旗的历史和含义吗？
通常指用两根竿子撑起的横幅标语，也可指某种主张、信仰等。
The workers held a banner reading 'We Want Bread' while on strike.
工人们罢工时打着横幅，上面写着“我们要面包”。
They were so excited that they kept waving banners.
他们非常激动，不停地挥动着横幅。
She never felt the need to carry the banner of feminism.
她从来都不觉得有必要举着女性主义的旗帜。
指挂在船上表示国籍的旗帜。
the White Ensign
英国海军旗
Can you tell me about the ensign of the Russian Navy?
你能告诉我俄罗斯海军的舰旗是什么样的吗？
指在正式仪式上使用的旗帜，尤指军旗。
Have you seen the royal standard of the United Kingdom?
你见过英国王室的旗帜吗？
相关例句：
Under the banner of education, we herd our children from ballet to basketball and back again.
打着教育的旗号，我们赶鸭子上架似的让孩子从芭蕾到篮球，不停地学这个学那个。
Display no startup banner and copyright message.
不显示启动版权标志和版权消息。
I felt the banner rip as we were pushed in opposite directions
当我们被推向相反的方向时，我感觉横幅被撕裂了。
They are all very excited because they have win the red banner.
他们都很激动，因为他们赢得了红旗。
Under Falcon's banner I stand before you.
在猎鹰的旗帜下，我站在你面前。
The banner of freedom was raised and the whole nation fought to drive out the invaders.
自由的旗帜升起了，全国奋起战斗，把侵略者驱逐出去。