terra incognita

• n. [拉]未发现的地域；(知识上的)未知领域

英英释义

Noun:

1. an unknown and unexplored region;

   "they came like angels out the unknown"
   

经典引文

• The historical landscape..looks at first like a terra incognita.

  出自： A. Briggs

• The largest region of geological terra incognita left on the global map.

  出自：New Scientist

近反义词

【近义词】

• unknown 未知的