Pcns
abbr. polar coordinate navigation system 极坐标导航系统
🗣️ 情景例句
I'm ten.
十岁。
My favorite game when I was a child was making snow angels in the freshly fallen snow.
我在孩提时代最喜欢玩的游戏，是在刚下的雪上堆雪天使。
to discover whether they are mentally ill more often than other people are.
看一看他们是否比其他人更易患精神病。