例句：

　　1.具有圍長(cháng)g的連通圖的周長(cháng)。

　　Circumference of Connected Graph with Girth g.

　　2.ISO薄壁軸瓦半圓周長(cháng)檢驗模CAD程序系統

　　A CAD Programming System for ISO Thin-Wall Bearing Semicircular Perimeter Checkout Model.

　　3.基于FFT的區域周長(cháng)的快速算法。

　　A Fast Algorithm Based on FFT for Calculating Perimeter of Region.

　　4.這個(gè)形狀奇特的美麗湖泊周長(cháng)約有15,000英尺。

　　This beautiful and curiously shaped lake lies at around fifteen thousand feet.

　　5.這個(gè)島周長(cháng)3.5千米。

　　The island is 3.5 km in circumference.