A manhole cover is a heavy, flat lid that covers an access point to an underground utility system, such as a sewer, water, or electrical line. Made of durable materials like metal or concrete, it is designed to be strong enough to withstand the weight of vehicles and pedestrians. The cover can be lifted to provide access for maintenance or repairs of the underground infrastructure. Manhole covers are typically round to prevent them from falling into the hole and are often found on streets, sidewalks, or other paved areas.

英語での「manhole cover」の定義と意味

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