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Pi·card AHD[pē-kärʹ] Jean (1620-1682) D.J.[piːˈkɑː]K.K.[piˈkɑr]NONE（无词性）- French cleric and astronomer who made an accurate measurement of a degree of meridian and subsequently calculated the circumference of the earth (1668-1670).皮卡尔，简：(1620-1682) 法国教士和天文学家，曾做过一次经度的精确测量，并由此而计算出地球的周长(1668-1670年）
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