防空

防空 (fáng kōng) refers to the measures taken to protect against aerial attacks, such as those from aircraft or missiles. It is commonly used in military and strategic contexts, focusing on safeguarding a country or region from airborne threats.

The character 防 (fáng) means 'to guard' or 'to prevent,' while 空 (kōng) means 'air' or 'sky.' Together, they form a compound that literally translates to 'air defense,' emphasizing the protection of airspace.

防空 is widely used in military terminology and is an essential part of national security strategies. It includes systems like radar, anti-aircraft weapons, and early warning networks. In everyday language, it may also appear in discussions about military exercises or defense policies.