a theoretical sun that moves along the celestial equator at a constant speed and completes its annual course in the same amount of time the real sun takes at variable speeds
mean sun的用法和样例:
例句
It includes several flight wools flat walls, or pannels panels, that directly reflect the sun's light onto the food. 它包括几个平的分界物,或者可以直接把阳光反射在食物上的嵌板。
As the sun was westering, I went back to the road, found my horse, mounted it and went to my appointment. 日头平西的时候,我回到原路上,找到了我的马,向前骑去。