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addition(al) element的英文翻译是什么意思，词典释义与在线翻译：
英英释义
名词 addition:
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a component that is added to something to improve it
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the act of adding one thing to another
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a quantity that is added
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something added to what you already have
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a suburban area laid out in streets and lots for a future residential area
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the arithmetic operation of summing; calculating the sum of two or more numbers
