circumference

名詞

1. 1

   圓周長、周長

   To find the circumference of a circle, multiply the diameter by pi.

   要求圓的周長，把直徑乘以圓周率即可。

2. 2

   周圍、外圍

   A narrow path runs around the circumference of the lake.

   湖的周圍有一條狹窄的小徑。

3. 3

   圍長、粗細

   The old tree measures nearly six meters in circumference.

   這棵老樹的樹圍將近六公尺。