aporia

詳細解釋：

a.po.ri.a

n.（名詞）
A figure of speech in which the speaker expresses or purports to be in doubt about a question.
窘迫，困惑：修辭方法，說話者表示或表明對問題存有疑問
An insoluble contradiction or paradox in a text`s meanings.
難題，難點：文章含義中難以解釋的矛盾或自相矛盾的議題

來源：
Greek [difficulty of passing]
Greek [difficulty of passing]
from aporos [impassable]
from aporos [impassable]
a- [without] * see a-
a- [without] *參見 a-
poros [passage] * see per- 2
poros [passage] *參見 per- 2