Ucav
abbr. uninhabited combat air vehicle 非传统战斗航空器，非传统战斗机
🗣️ 情景例句
He's a terrific doctor, Mom.
爸爸是个了不起的医生， 妈妈。
Laugh before breakfast you'll cry before supper.
乐极生悲。
Nothing serious, I hope.
我希望没什么大病。