Ddu
abbr. 数字显示器（Digital Display Unit）；未完税交货（Deliverde Duty Unpaid）
🗣️ 情景例句
Be prepared to discuss details and be ready to answer questions.
应随时准备好讨论细节和回答对方的疑问。
And do you have friends there?
你在那儿有朋友吗？
No,you mustn't eat anything until you see the doctor.
不行，看医生之前你不可以吃任何东西。