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
Don't eat any strange food.
别吃什么不对劲的食物。
He was accustomed to poor food.
他习惯于粗茶淡饭。
When he denied the train's existence,
他说根本没有这趟车。