Federal aviation agency
un. 联邦航空局\\n
🧩 词语组成解析
🗣️ 情景例句
In my opinion, winter in Beijing is not very cold.
我觉得北京的冬天不是特别冷。
It's nice to be sitting here with you.
在这里陪你坐着是非常愉快的。[动词不定式的进行时]
When I asked him what he was doing, he smiled guiltily and then put the parcel on the desk.
当我问他正干什么时，他内疚地笑了，然后把那个大包拿到了桌上。