Udu
abbr. underwater detection unit 水下探测设备，水下探测器; user data unit 用户数据单元
🗣️ 情景例句
We really appreciate it.
我们实在很感激。
I hope I remember to ask the barber not to cut my hair too short.
我希望我能记得要求理发师把我的头发理短点。
Nice meeting you. Bye-bye.
见到你（也）很高兴。再见。