Prb
abbr. principal borehole 主钻井
🗣️ 情景例句
Don't forget to take lots of pictures.
别忘了照些照片。
A good medicine tastes bitter.
良药苦口，忠言逆耳。
My sister is only seven, but she always tells me whether my pictures are good or not.
我的妹妹只有7岁，但她总能说出我的画是好还是坏。