求翻译：在赤道的南北两边，画出许多和赤道平行的“纬圈”；构成这些圆圈的线段，叫做纬线。定义为地球面上一点到球心的连线与赤道平面的夹角。我们把赤道定为0纬度，向南向北各为90度，在赤道以南（北）的叫南（北）纬。是什么意思？

Both sides of the equator north and south, parallel to the equator and draw many of the "zonal"; the segments that make up these circles, called parallels. Earth's surface is defined as a connection point to the center of the sphere with the equatorial plane of the angle. We set the equator is 0 lat

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In the equator north and south nearby two, draw many and the equator parallel “the parallel circle”; Constitutes these circle line segment, the named latitude parallel.Defines for the surface of the earth on to the center of a sphere segment and the equatorial plane included angle.We decide as the e

In the North and South sides of the Equator and draw many parallel to the Equator "latitude circle"; these segments of circles called Parallels. Defined as a line on the surface of the Earth to spin-and angle between the equatorial plane. We set at 0 Equatorial latitudes, is 90 degrees to the South

Both sides of the equator north and south, parallel to the equator and draw many of the "zonal"; the segments that make up these circles, called parallels. Earth's surface is defined as a connection point to the center of the sphere with the equatorial plane of the angle. We set the equator is 0 lat