;His parents discouraged him from joining the airforce.
他的父母亲劝他不要参加空军。
His parents discouraged him from joining the airforce.
他的父母亲劝他不要参加空军。
The armed forces of a country are is army, navy and airforce.
一个国家的武装力量是它的陆海空三军。
The airforce bombed two towns.
空军轰炸了两个城镇。
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