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Circumference
01
周长
the distance around the external boundary of something
Example
She measured the circumference of the tree trunk to determine its age.
The athlete completed a lap around the track, covering the entire circumference in record time.
To estimate the size of the pond, we measured the circumference using a measuring tape.
02
周长
(geometry) the length of the external boundary of a curved shape, especially a circle
Example
The mathematician used the circumference to solve the geometry problem.
The teacher explained that the circumference is different from the area of a circle.
To find the circumference of a wheel, you need to know its radius or diameter.
03
周长
the boundary line encompassing an area or object
例子
She measured the circumference of the tree trunk to determine its age.
The athlete completed a lap around the track, covering the entire circumference in record time.
To estimate the size of the pond, we measured the circumference using a measuring tape.
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