The circumference of a circle, place, or round object is the distance around its edge.
例句
...a scientist calculating the earth's circumference...計算地球周長的科學家The island is 3.5 km in circumference.這個島周長3.5千米。
N-UNCOUNT
(圓、地方、圓狀物的)邊緣，周緣
The circumference of a circle, place, or round object is its edge.
例句
Cut the salmon into long strips and wrap it round the circumference of the bread.把鮭魚切成長條，纏裹在面包上。
英漢詞典釋義
n.
周圍;圓周,圓周長
an area three miles in circumference周長為3英里的區域It’s a mile round the circumference of the field.運動場周長一英里。The lake is thirty li in circumference.這湖周圍長30里。
英英詞典釋義
Noun
1. the size of something as given by the distance around it