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无 Delta Deltə N.三角洲 N C.1200 Greek Letter

单词 delta
音标 ['deltə]
解释 n.三角洲
红宝书
字源 delta (n.)
c.1200, Greek letter shaped like a triangle, equivalent to our "D," the name from Phoenician daleth "tent door." Herodotus used it of the mouth of the Nile, and it was so used in English from 1550s; applied to other river mouths from 1790.
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