Pgp
abbr. 加密软体（Pretty Good Privacy）
🗣️ 情景例句
to serve the senior citizens
为Riverdale的老年人
I enjoyed the movie very much. I wish I had read the book from which it was made.
电影不错，我希望我读过原著。[wish + 主语 = 过去完成时 = 愿望之事在wish以前发生。]
What about when we leave?
我们离开实验室又该做些什么呢？