The subsolar point will cross every latitude between these two extremes exactly twice per year.

太阳直射点每年恰好两次穿越这两个极端之间的所有纬度。

As the seasons change over the course of the year, the subsolar point will move between 23.5 degrees north and 23.5 degrees south.

春夏秋冬，四季轮回，太阳直射地球的地方在北纬23度5和南纬23度5之间周而复始。 。