a deep, wide ditch surrounding a castle, fort, or town, typically filled with water and intended as a defence against attack
护城河,城壕;壕沟,壕堑。
surround (a place) with a moat
筑城壕(或壕沟)围绕
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a moated castle. 有护城河的城堡。
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moatn.护城河;城壕;壕沟;壕堑
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meatn.肉;食物;实质;主要部分;果肉;坚果仁;可食用部分
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boatn.舟;小船;帆船;划子;调味汁盆;卤汁船形盆;大客轮;大小不等的船
"late Middle English: from Old French