Prb
abbr. principal borehole 主钻井
🗣️ 情景例句
that you care about us.
关心我们大家。
The telephone is ringing,would you answer it,please?
电话正在响,你接吗？
Houses -- often three storeys high -- were built of stone.
房子一般有3层楼高，用石块修建。