Naca
abbr. National Advisory Committee for Aeronautics <美> 国家航空咨询委员会
🗣️ 情景例句
Hi, Michelle.
嗨， Michelle。
Please forgive me.I didn't mean to start an argument.
请原谅我。我没开始争论的意思。
Are you going to have a party?
你要举行聚会吗？