Pdu
[计] 协议数据单元
🗣️ 情景例句
He was left in charge of the shop while the manager was away.
经理不在时他负责这个商店。
She is afraid he'll think her a pig.
她怕他会像对猪般的厌恶她。
One night, however, feeling cold and lonely,
可是，有一天夜里，我感到又冷又孤单，