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![Helmet - Wikipedia, the free encyclopedia](https://www.iarticlesnet.com/pub/img/site/s_22.jpeg)
Helmet - Wikipedia, the free encyclopedia
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日期:2024-08-04
A helmet is a form of protective gear worn to protect the head from injuries. Ceremonial or symbolic helmets (e.g., UK policeman's helmet) without protective function are sometimes used. The oldest known use of helmets was by Assyrian soldiers in 900BC, w...看更多