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delta

noun
🔊/ˈdeltə/
🔊/ˈdeltə/
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  1. the fourth letter of the Greek alphabet (Δ, δ)希腊字母表的第 4 个字母
  2. an area of land, like a triangle in shape, where a river has split into several smaller rivers before entering the sea三角洲
    • the Nile Delta尼罗河三角洲
    Topics Geographyc2
    3. Word Originsense 1 Greek, from Phoenician daleth.sense 2 mid 16th cent.: originally specifically as the Delta (of the River Nile), from the shape of the Greek letter.

Delta

noun
🔊/ˈdeltə/
🔊/ˈdeltə/
[uncountable]
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  1. a British qualification from the University of Cambridge now called the ‘Diploma in Teaching English to Speakers of Other Languages’ for experienced teachers of English as a foreign language (the abbreviation for ‘Diploma in English Language Teaching to Adults’)