diameter
英[da???m?t?(r)]
美[da???m?t?r]
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柯林斯高阶英汉双解学习词典释义
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Noun
1. the length of a straight line passing through the center of a circle and connecting two points on the circumference
2. a straight line connecting the center of a circle with two points on its perimeter (or the center of a sphere with two points on its surface)
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