Pgns
abbr. Primary Guidance and Navigation System 初级制导与导航系统
🗣️ 情景例句
Fifty years? Wow!
五十年？ 喔！
I'm studying upstairs.
我在楼上读书。
For the same reason, writers talk interminably about their own books,
由于这个原因，作家喋喋不休地谈论自己的书，