Naca
abbr. National Advisory Committee for Aeronautics <美> 国家航空咨询委员会
🗣️ 情景例句
Sit down. Sit down.
请坐。请坐吧。
The baby liked to feel the touch of her shiny, new toy.
小宝宝喜欢新玩具闪闪发光的触感。
We are late already.
现在就已经晚了。