空防

Traditional form:

空防

Pinyin (reading):

kōngfáng

Definitions:

• air force
• air defense

Characters:

• 空 - hollow, empty, deserted, bare
• 防 - to protect, to defend, to guard against

Traditional characters:

• 空 - hollow, empty, deserted, bare
• 防 - to protect, to defend, to guard against