Dfa
abbr. 美术博士（ Doctor of Fine Art）
🗣️ 情景例句
Thanks, Robbie.
谢谢，Robbie。
Help! I've been kidnapped.
救命呀！我被绑架了！
Professor Ronald Bracewell, a leading American radio astronomer,argued in Nature that such a superior civilization, on a visit to our own solar system,
假如有如此高级文明生命访问了我们的太阳系，