Hhd
abbr. 古典文学博士（Humanitatum Doctor, 等于Doctor of Humanities）
🗣️ 情景例句
I know it!
我知道！
To know everything is to know nothing.
事事皆知，事事不懂。
To be or not to be, that's the question.
生存亦或死亡， 是问题所在。