circumference

英 [səˈkʌmfərəns]

美 [sərˈkʌmfərəns]

n.  圆周; 圆周长

复数：circumferences　

CET4CET6考研TOEFLIELTSGRETEM4TEM8医学

BNC.15114 / COCA.15774

牛津词典

noun

• 圆周；圆周长
  a line that goes around a circle or any other curved shape; the length of this line
  1. the circumference of the earth
     地球的周长
  2. The earth is almost 25 000 miles in circumference .
     地球的周长大约为25 000英里。

柯林斯词典

• N-UNCOUNT (圆、地方、圆状物的)周长
  Thecircumferenceof a circle, place, or round object is the distance around its edge.
  1. ...a scientist calculating the earth's circumference...
     计算地球周长的科学家
  2. The island is 3.5 km in circumference.
     这个岛周长3.5千米。
• N-UNCOUNT (圆、地方、圆状物的)边缘，周缘
  Thecircumferenceof a circle, place, or round object is its edge.
  1. Cut the salmon into long strips and wrap it round the circumference of the bread.
     把鲑鱼切成长条，缠裹在面包上。

英英释义

noun

• the size of something as given by the distance around it
  Synonym:perimeter
• the length of the closed curve of a circle
• the boundary line encompassing an area or object
  1. he had walked the full circumference of his land
  2. a danger to all races over the whole circumference of the globe
  Synonym:circuit

双语例句

• Why not simply specify starting and ending points on the circumference of the ellipse?
  为什么不简单地指定椭圆的圆周上的开始和结束的点呢？
• Investigators then measured waist circumference, blood pressure, cholesterol levels and C-reactive protein concentrations to determine heart health.
  研究人员还分别测量了他们的腰围、血压、胆固醇水平以及反应蛋白浓度，通过对于这些数据的分析来确定受测者的健康水平。
• Head and chest circumference are checked on all children under two years of age.
  两岁以下的婴儿都应测量头围和胸围。
• More recently, lower thresholds for waist circumference have been recommended for Asian populations.
  最近，对亚洲人群推荐了一个更低的腰围阈值。
• Studies comparing changes in waist circumference among different groups have yielded similar results.
  两项研究都对不同组别腰围的变化进行了比较，并得出了相似的结论。
• The tree has a circumference of 6 feet.
  这棵树周长6英尺。
• I have to have a whole number of wavelengths to get around the circumference.
  我必须要有个关于波长的总体数字，测量周长。
• Do not confuse ever the tangential acceleration, which is along the circumference, with a centripetal acceleration.
  但是别把这个切向加速度，它是沿着圆周的，和向心加速度混淆。
• A circle has diameter, radius and circumference.
  圆有直径，半径和圆周。
• The ratio of the circumference to the diameter of a circle.
  圆周长度与圆的直径长度的比。