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street sweeper
A street sweeper or street cleaner may refer to either a person's occupation, or a machine that cleans streets. A street sweeper cleans the streets, usually in an urban area.
Street sweepers have been employed in cities since sanitation and waste removal became a priority. A street-sweeping person would use a broom and shovel to clean off litter, animal waste and filth that accumulated on streets. Later, water hoses were used to wash the streets.
Machines were created in the 19th century to do the job more efficiently. Today, modern street sweepers are mounted on truck bodies and can vacuum debris that accumulates in streets.
==History==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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