GbEng
约翰的哥哥已报名参加了空军,这是他渴望已久的。 John's brother signed up with the Air Force, something he always wanted to do.
他退休前是空军中将。 He was an Air Marshal before retirement.
空军是国防的重要组成部分。 Air force is an important component of national defense.
船只本身需要海军和空军的保护。 The ships required the protection of naval and air power.
现正在招募空军。 Now, men are enlisting for the air force.
该空军中队执行一侦察任务. The squadron flew a reconnaissance mission.