Prb
abbr. principal borehole 主钻井
🗣️ 情景例句
Part of the building for older people,
建筑物中的一部分给老年人用，
In books,are embalmed the greatest thoughts of all ages.
伟大思想古今有，载入书中成不朽。
What do you want?
你想怎么样？