| 单词 | 周长 |
| 释义 | 〔Eratosthenes〕Greek mathematician, astronomer, and geographer who devised a map of the world and estimated the circumference of the earth and the distance to the moon and the sun.埃拉托色尼斯：希腊数学家、天文学家、地理学家，他设计了一种世界地图并推测了地球的周长及地球到月球和太阳的距离〔around〕In circumference or perimeter:周长：以周围的或周边的：〔circumference〕the perimeter of a rectangle;一个矩形的周长；〔circumference〕The length of such a boundary.周长：这种边界的长度〔cablet〕A cable-laid rope with a circumference of less than 10 inches (25 centimeters).电缆：一种电缆敷设用的缆绳，其周长不到10英寸（25厘米）〔Picard〕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）〔perimeter〕The length of such a boundary.周长：此类边界的长度〔slim〕Small in girth or thickness in proportion to height or length; slender.苗条的，修长的：与高度或长度相比周长或厚度小的；纤细的〔Mars〕The fourth planet from the sun, having a sidereal period of revolution about the sun of 687 days at a mean distance of 227.8 million kilometers (141.6 million miles) and a mean diameter of approximately 6,726 kilometers (4,180 miles).火星：距太阳第四近的行星。绕太阳公转周期为687天，距太阳平均距离为227.8百万公里(141.6百万英里），平均周长大约为6,726公里(4,180英里）〔mustache〕A group of bristles or hairs about the mouth of an animal.动物嘴四周长的须或毛的东西 |
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