This is the 16902nd most frequent Korean word.
상공을
"상공을" means "the sky" or "airspace" in English.
In this sentence, "상공을" is used to describe the action of flying in the skies, indicating the open area above ground level.
새들은 맑은 날씨에 상공을 자유롭게 날고 있다.
The birds are freely flying in the skies during clear weather.
"상공을" here refers to the controlled airspace where airplanes operate, generally above ground level.
비행기가 상공을 빠르게 이동하고 있다.
The airplane is swiftly moving through the airspace.
In this context, "상공을" indicates the utilization of aerial space for an activity, emphasizing the overhead area.