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单词
filter bed
释义
filter bed
n.
(名词)
A layer of sand or gravel on the bottom of a reservoir or tank, used to filter water or sewage.
滤垫:在蓄水池或大容器底部铺的一层沙或砾石,用于过滤水或污水
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Armenians
Armenian Soviet Socialist Republic
Armentières
armet
armets
armful
armfuls
armhole
armies
armiger
armigeri
armigers
Armijo
armillary sphere
Armin
arming
Arminian
Arminians
Arminius
armistice
Armistice Day
armistices
armlet
armlets
armload
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更新时间:2026/2/19 7:44:21