Ddu
abbr. 数字显示器（Digital Display Unit）；未完税交货（Deliverde Duty Unpaid）
🗣️ 情景例句
Morning.
早安。
The love of money and the love of learning rarely meet.
爱财与好学，实难相共容。
and that is what all patients demand of their doctors----to be cured at no inconvenience to themselves.
病要治好，但不要太麻烦。