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名稱 diameter:
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the length of a straight line passing through the center of a circle and connecting two points on the circumference
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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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上面的內容獨有創作實踐,受論著權保護的,侵犯肖像權必究
海詞英語詞典,十八年品牌標志