[N-UNCOUNT 不可数名词](圆、地方、圆状物的)周长 The circumference of a circle, place, or round object is the distance around its edge.
...a scientist calculating the earth's circumference...
计算地球周长的科学家
The island is 3.5 km in circumference.
这个岛周长3.5千米。
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[N-UNCOUNT 不可数名词](圆、地方、圆状物的)边缘,周缘 The circumference of a circle, place, or round object is its edge.
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。
Oxford
cir·cum·fer·ence/səˈkʌmfərəns; NAmEsərˈkʌmfərəns/noun _circles_comp.jpg _circles1.jpg [countable , uncountable ]a line that goes around a circle or any other curved shape; the length of this line 圆周;圆周长◆the circumference of the earth地球的周长◆The earth is almost 25 000 miles in circumference.地球的周长大约为 25 000 英里。☞compare
[countable usually singular, uncountable] the distance or measurement around the outside of a circle or any round shape → diameter, perimeter, radiuscircumference of the circumference of the Earthin circumference The island is only nine miles in circumference.
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