1. 那一個點落在這圓的圓周線上。
   That point falls on the circumference of the circle.
2. 羅盤上三十二個方位之一用來指示方向的水手羅經(jīng)刻度盤圓周上標記的三十二等分中之一
   Any of the32 equal divisions marked at the circumference of a mariner's compass card that indicate direction.
3. 地球的圓周長約為25000。
   The circumference of the earth is almost 25000 miles/The earth is almost 25000 miles in circumference.
4. 地球的圓周長約為兩萬五千英里。
   The circumference of the earth is almost 25,000 miles.

圓的英語翻譯：

周的英語翻譯：