3 sentences

1. 他穿着他的空军制服。

   tā chuān zhe tā de kōng​jūn zhì​fú.

   He was wearing his Air Force uniform.

   Source: CCMatrix

2. 在19岁的时候，我加入了空军。

   zài19 suì de shí​hou, wǒ jiā​rù le kōng​jūn.

   At 19 years old I joined the Air Force.

   Source: CCMatrix

3. 他的父亲在美国空军服役。

   tā de fù​qīn zài měi​guó kōng​jūn fú yì.

   His father served in the United States Air Force.

   Source: CCMatrix