Gbr
abbr. 引导骨再生术（Guided Bone Regeneration）；英国（Great Britain）
🗣️ 情景例句
Please try to keep relaxed, sir.
别太紧张，先生。
The little boy left home for his first day at school.
那个小孩第一天离开家去上学。
My secretary can start on it right away.
我的秘书现在就要可以打。