Prb
abbr. principal borehole 主钻井
🗣️ 情景例句
I did that. Go on.
我已经打了。 继续说。
Deliberate slowly,execute promptly.
慢慢酌量，快快行动。
Jim is writing. Lily isn't writing. She's looking at the blackboard.
吉姆在写字。莉莉没在写字。她在看黑板。