名词

1. (圆、地方、圆状物的)周长
The circumference of a circle, place, or round object is the distance around its edge.

2. (圆、地方、圆状物的)边缘，周缘
The circumference of a circle, place, or round object is its edge.

1. the size of something as given by the distance around it

Synonym: perimeter

2. the length of the closed curve of a circle

3. the boundary line encompassing an area or object

e.g. he had walked the full circumference of his land
a danger to all races over the whole circumference of the globe

Synonym: circuit