oblate sphere短语¹⁴⁴⁹⁷²⁺² 基本例句 扁圆球 The earth was first proved to be an oblate sphere by survey. It was found that the higher the latitude of a place was, the shorter the straight line distance between every degree of meridian was. 在测量中已发现纬度越高的地点，子午线每一度的直线距离越短，首次用测量方法证明地球为扁圆形。 cnki