circumference

英 [səˈkʌmfərəns]

美 [sərˈkʌmfərəns]

n. 圆周; 圆周长

BNC.15114 / COCA.15774

牛津词典

noun

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。

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

The PI method returns the ratio of a circles circumference to its diameter.
PI方法返回圆周与直径的比率。
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？
Clothing size of the factory for our specific waist circumference, brassieres and height to determine.
衣服尺寸是由工厂根据我们提供的具体腰围、围和身高来确定的。
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。
In addition, the ratio between waist circumference and hip circumference is also an important indicator to measure health.
另外，腰围和臀围之比也是一个衡量健康的重要指标。
When would I ever need to compute the circumference of a circle?
我几时曾需要计算圆周长了？
The tree has a circumference of 6 feet.
这棵树周长6英尺。
The lake has a circumference of 800 li.
那个湖方圆800里。
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。
A circle has diameter, radius and circumference.
圆有直径，半径和圆周。