空军 kōngjūn air force
air force; (slang) to fail to catch anything (on a fishing trip); to get skunked
How to remember 空军: 空 empty + 军 army = air force.
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How it is used
- The air force branch of the military - 空军基地 (kōngjūn jīdì) air force base; contrasts with 陆军 (army) and 海军 (navy).
- Neutral, standard term in news and defense contexts.
- Slang aside: among anglers 空军 means going home empty-handed (getting skunked) - context makes it clear.