A land drain is usually a pipe buried in farm land but it may also be an open channel.

农田的排水系统通常是埋在农田中的管子，但也可以是明渠。

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The authorities have mobilized vast numbers of people to drain flooded land and build or repair dikes.

当局动员了大批民众为遭受洪灾的地区排涝并修建或修复堤坝。

《柯林斯英汉双解大词典》

This is fen country – the mills drive pumps that drain the land.

这是一个沼泽国 - 这些工厂启动水泵排干地面积水。

《柯林斯英汉双解大词典》

The dam would also make sure that the land did not drain too much in normal conditions, all of which Nottinghamshire Wildlife Trust had not objected to.

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Other laws enable you to drain your land of water or to get water onto your land.

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It is a time-waster, they say, a drain on family incomes, a usurper of land and water better used for cash and export crops like coffee, and possibly a dangerous narcotic too.

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