Drainage refers to the process of directing water or waste away from an area to prevent flooding or water buildup. It involves the use of pipes, channels, or other structures to move liquid waste, rainwater, or excess water to a designated area, such as a sewer or natural water body. Good drainage helps keep surfaces dry and safe, preventing damage to buildings or land. This system is commonly used in areas like roads, farms, and urban environments to manage water flow and avoid flooding.

英語での「drainage」の定義と意味

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