Pcns
abbr. polar coordinate navigation system 极坐标导航系统
🗣️ 情景例句
These files are highly confidential, please store them properly.
这些文件是高度机密的，请妥善保存。
Did you make dessert yourself?
你自己亲自做甜点？
He is crazy about Crazy English.
他对疯狂英语很着迷。