As long as the precise sensing a meridian arc length, we can easily calculate the circumference of the earth.

只要精确测知一段子午线弧长，便会很容易地计算出地球的周长。

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The length of each buckle can be adjusted according to neck circumference sizes.

搭扣的长度可依颈围大小调节。

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Each doughnut loop (a "handle") has a length and a circumference, resulting in a huge assortment of possible geometries for the small dimensions.

每一个甜甜圈环(手)有长度及周长，为小维度造就了一大堆各式各样可能的几何形状。

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Hollywood used to have a set of numbers -- waist circumference, face shape, beard length -- that Santas were supposed to adhere to, Kliner said.

CNN: Should Santa Claus still be fat?