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
How do you get to work everyday?
你每天怎样去上班？
This is a receipt.
这是一张收据。
Behind those trees.
在那些树后面。