Uav
abbr. unavailability 无用度; 无效度; unmanned aerial vehicle 无人驾驶航空器; urban assault vehicle 城市中突击交通工具
🗣️ 情景例句
When did the Roman Empire come into being?
罗马帝国是什么时候形成的？
How much is it by registered mail?
挂号信要多少钱？
How bad was the damage.
损坏情况如何？