| 释义 |
cir·cum·fer·ence AHD[sər-kŭmʹfər-əns] D.J.[səˈkʌmfərəns]K.K.[sɚˈkʌmfərəns]n.（名词）abbr. cir, circ., circum.【缩写】- The boundary line of a circle.圆周：一个圆的边界线
- The boundary line of a figure, area, or object.周围：一个图形、区域或物体的边界线
- The length of such a boundary.周长：这种边界的长度
- Middle English 中古英语
- from Old French circonference 源自 古法语 circonference
- from Latin circumferentia 源自 拉丁语 circumferentia
- from circumferēns circumferent- [present participle of] circumferre [to carry around] 源自 circumferēns circumferent- circumferre的现在分词 [达到]
- circum- [circum-] circum- [环绕]
- ferre [to carry] * see bher- 1ferre [达到] * 参见 bher- 1
circum'ferenʹtial AHD[-fə-rĕnʹshəl] （形容词）circumference, circuit, compass, perimeter, periphery- The central meaning shared by these nouns is "a line around a closed figure or area": 这些名词所共有的中心意义是“包围着一个封闭图形或区域的线”： the circumference of the earth;地球的周边；a park five acres in circuit;一个占地五英亩的公园；stayed within the compass of the schoolyard;停留在校园的范围内；the perimeter of a rectangle;一个矩形的周长；erected a fence around the periphery of the property. 在地产周围竖起围墙
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