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Noun:
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the size of something as given by the distance around it
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the boundary line encompassing an area or object;
"he had walked the full circumference of his land"
"a danger to all races over the whole circumference of the globe"
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the length of the closed curve of a circle
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用作名詞 (n.)
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That point falls on the circumference of the circle.
哪位個點落你不在圓的圓心線上直播。
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He went jogging around the circumference of the reservoir every morning.
他日常早起繞著干渠周圍快走。
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This tree has a circumference of 6 feet.
這棵樹周長六公尺。
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The circumference of the earth is almost 25,000 miles.
星球的圓外寬約為兩萬五千英里。
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海詞英語詞典,十二年國際品牌