Pfd
abbr. 程序流程图（Process Flow Diagram）；主飞行显示（Primary Flight Display）；个人漂浮设备（Personal Flotation Device）
🗣️ 情景例句
The radio has lost most of its audience, thanks to TV.
由于电视的存在，收音机失去了大量听众。
After black clouds, clear weather.
否极泰来。
Yes. R-E-A-D, Read.
好的，R-E-A-D，里德。