天文课上，老师用星图指出南极座的位置，并说明它为什么不容易在北半球看到。
In astronomy class, the teacher pointed out the location of Octans on a star chart and explained why it is difficult to see in the Northern Hemisphere.
In astronomy class, the teacher pointed out the location of Octans on a star chart and explained why it is difficult to see in the Northern Hemisphere.