Rbd
abbr. rapid beam deflector 快速波束偏转器; required beginning date 必需的初始日期; right border of dullness 右浊音界（心脏叩诊）
🗣️ 情景例句
Good morning. My name is Richard Stewart.
早安。我叫Richard Stewart。
I got your back.
放心！
Is that a car, too?
那也是一辆车吗？