我们知道,地球除了自转外,还会沿着椭圆形的轨道围绕太阳公转。由于地球自转的轴心是倾斜的,地球表面某些部分会在运行中的某些时段里面向太阳,被太阳照射的一面,会比较温暖,在季节上也就是我们所说的夏天,反之则是冬天。如果地球不转,就不会有季节的变换,日历也就没有存在的意义。一旦地球 We know that in addition to rotation, the Earth revolves around the sun along an elliptical orbit. Since the axis of rotation of the earth is tilted, some parts of the earth’s surface will face the sun during certain periods in operation. The sun’s rays will be warmer in the seasons, and in the seasons we call it summer, and vice versa It is winter. If the earth does not turn, there will be no change of seasons, and the calendar will have no meaning. Once the earth