approximate ratio of the circumference of a circle to its diameter as calculated by Zu Chongzhi during the Southern and Northern Dynasties period: between 3.1415926 and 3.1415927
汉译英翻译词典收录86165条汉英翻译词条，基本涵盖了全部常用中文字词的英语拼写、翻译、音标、读音、用法、例句等，是英语学习的有利工具。