Pcdds
[计]= Private Circuit Digital Data Service,专用电路数字数据业务
🗣️ 情景例句
at the Museum of Natural History.
在自然历史博物馆。
He's studying his lesson.
他正在学习课程。
Mr and Mrs Shute were very sad. But what could they do?
舒特先生和夫人非常难过。但他们有什么办法呢？