Duc
abbr. [电子]数字上变频器（Digital Up Converter）
🗣️ 情景例句
Well, have a nice trip and best wishes to your wife.
祝你一路顺风，并替我向你太太问好。
Truth will stand without a prop.
真理能树，不靠支持。
At one point, it seemed certain that their plane would crash.
在有个地方，飞机似乎肯定要坠毁了。