Usn
abbr. 美国海军（United States Navy）
📖 牛津释义
USN
abbr
缩写 = United States Navy 美国海军.
🗣️ 情景例句
What kind of advice are you looking for?
希望能得到什么建议？
I often read the newspaper in the morning.
我常常在早上看报。
What's that in your hand?
你手里拿的是什么？