海报用英语怎么说

The question "How to say 'poster' in English" can be answered in 145 words as follows:

In English, the word for "poster" is simply "poster." It is a noun that refers to a large image or message displayed in public places for promotional or informational purposes. The size of a poster can vary depending on the intended use and audience, but it typically measures around 24 inches by 36 inches (ca. 60 cm by 91 cm). Posters are commonly used in marketing campaigns, public service announcements, and event promotion.