Prdc
abbr. Polar Research and Development Center <美>（陆军）极地研究发展中心
🗣️ 情景例句
Thank you.
谢谢。
Sorry, it's broken. You have to use the stairs.
对不起，它坏了，你只能走楼梯了。
What?Speak up. Penny.I'm afraid I can't hear you.
什么？彭妮，大声一点。我可听不见你念的。