Pcns
abbr. polar coordinate navigation system 极坐标导航系统
🗣️ 情景例句
It's getting late. Please excuse me, but I must leave right away.
时间不早了。对不起，我得赶紧走了。
This restaurant serves spaghetti, but not pizza.
这家餐厅做通心粉，但是没有比萨饼。
He gives the bank specimens of his signature,
他把自己签名的样本交给银行，