Ndn
[计]= New Data Network,新数据网络
🗣️ 情景例句
But it is not polite to ask older people their age.
但问老人的年龄是不礼貌的。
Don't forget to take care of him.
不要忘记照顾他。
Right. They're running and jumping all the time.
对，他们老是跑啊跳的。