Pdu
[计] 协议数据单元
🗣️ 情景例句
Mrs. Stewart, may I have this dance?
Stewart太太，我可以请你跳这支舞吗？
Hang on, please.
请等一下。
A great many goods were sent to the exhibition from various parts of the world.
大量的商品从世界各地运送到了博览会，