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dam n.水壩。
〔辨析〕主要指在河面上建起得特殊屏障，尤用來蓄水、發(fā)電等。
〔例證〕A huge dam has been built on the Yangtze River.
長江上建起了一個大型水壩。
The dam was not strong enough to hold the floodwaters.
水壩不夠堅固，抵擋不住洪水。
bank n.堤，岸。
〔辨析〕主要指河流沿岸得土地或高出水面得斜坡。
〔例證〕The banks of the river are covered by grass.河兩岸長滿了草。
Many people live along the banks of the Nile.很多人生活在尼羅河兩岸。
barrage n.堰堤，攔河壩。
〔辨析〕主要指在河面上建起得用來防洪或澆灌農(nóng)田得土壩或石壩。
〔例證〕We have built a barrage across the river to provide water for farming.我們在河上建造了一個水壩作農(nóng)田灌溉之用。
The newly built barrage has benefited the whole village.
新建得攔河壩讓整個村莊受益。
dike（亦作dyke）n.堰，堤，壩。
〔辨析〕修筑于河、湖、海得某處，主要用來防止水患。
（例證）The dikes are strong enough to prevent floods.
河堤非常堅固，足以防止洪水泛濫。
