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单词 circumference
释义 circumference
 /seuhr kum"feuhr euhns/,  n.  
  1. the outer boundary, esp. of a circular area; perimeter: the circumference of a circle.
  2. the length of such a boundary: a one-mile circumference.
  3. the area within a bounding line: the vast circumference of his mind.
 [1350-1400; ME < LL circumferentia, equiv. to circum- CIRCUM- + fer- (s. of ferre to carry) + -entia -ENCE]
 Syn. 1. periphery, circuit.
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