暗あん黒こく時じ代だい

noun

Dark Ages

Refers specifically to the historical period in Europe, often used in historical or metaphorical contexts.

• 中ちゅう世せいヨーロッパの暗あん黒こく時じ代だいについて学まなぶ。

  Learn about the Dark Ages of medieval Europe.

noun

dark age; period of stagnation

Generalized use for any period of decline, oppression, or lack of progress, not limited to European history.

• その国くには長ながい暗あん黒こく時じ代だいを経けい験けんした。

  That country experienced a long dark age.