周長的英文：
perimeter
circumference

參考例句：
  • (in measurements)following the circumference
    (度量)周長
  • What is the perimeter of the polygon?
    這個多邊形的周長是多少?
  • What is the perimeter of this polygon?
    這個多邊形的周長是多少？
  • the perimeter of a rectangle
    一個矩形的周長
  • The circuit of the city walls is three miles.
    環(huán)繞本市城墻的周長是三英里。
  • This tree is 3 meters in girth.
    這棵樹周長有三公尺。
  • A young tree measuring only 18 inches round
    周長僅18英寸的小樹
  • This tree is 3 meters in girth.
    這棵樹周長有三公尺。
  • Weeds grow around the house
    房屋四周長滿了野草。
  • The circle has greater area than a regular polygon of the same perimeter
    圓的面積比同樣周長的正多邊形的面積大。
perimeter是什么意思：
n. 邊界；外緣；周長
  • What is the perimeter of the polygon?
    這個多邊形的周長是多少?
  • Iverson has the penetration ability and perimeter.
    艾佛森擁有突破和外圍投射能力。
  • A fence marked the perimeter of the field.
    一道籬笆標(biāo)明了那塊田地的周界。
  • The perimeter of the airfield is protected by guard - dogs.
    機(jī)場外的環(huán)形防衛(wèi)圈由警犬保衛(wèi)著。
  • Guards have been posted at several point around the perimeter.
    在環(huán)形防線上已布置了幾處崗哨。
circumference是什么意思：
n. 圓周，周長
  • An arc is a part of the circumference of a circle or other curved lines.
    弧是圓周或曲線的一部分。
  • The recruit made the current circulate in the circuit on the circumference.
    新兵使電流在周長上在電路內(nèi)循環(huán)。
  • The ratio of circumference to diameter is approximately 3.1416.
    圓周長與直徑的比大約是3.1416。
  • A point equidistant from all points on the circumference of a circle or on the surface of a sphere.
    圓心，球心與一圓周上或一球面上所有點等距的一點
  • Cut the salmon into long strips and wrap it round the circumference of the bread.
    把鮭魚切成長條，纏裹在面包上。

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