Ddn
[计] 数字数据网, 美国国防数据网络
🗣️ 情景例句
If there's anything you need, please call me.
假如你们需要什么， 请打电话给我。
He's a policeman.
他是警察。
if you think what it must be like to share the deck of a ship with several squadrons of jet aircraft,
因此，如果你能想像出同在一个甲板上是什么滋味儿的话，和几个中队的喷气机。