Prb
abbr. principal borehole 主钻井
🗣️ 情景例句
I'm a student of the world; in other words I flunked out of high school.
我是社会学生，换句话说，我高中后就辍学了。
Nothing succeeds like success.
一事成功，事事顺利。
I'm very glad to hear that.
很高兴听你这样说。