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单词 circumference
例句
circumferencecircumference /sɚˈkʌmfrəns/ noun circumference
the distance around the outside of a circle or a round object:
  • The island is only nine miles in circumference.
  • perimeter
    the total length of the sides of a shape such as a rectangle:
  • Measure the perimeter of the rectangle.
  • You also use perimeter about the outside edge of a place or area: Armed guards walk around the perimeter of the building.
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    更新时间:2025/4/25 5:44:15