氷ひょう河が時じ代だい

noun

ice age; glacial period

Refers to a long period of geological time when ice sheets covered large parts of the Earth. Used in both scientific and general contexts.

• 氷ひょう河が時じ代だいには、マンモスが生いきていた。

  Mammoths lived during the ice age.

• 次つぎの氷ひょう河が時じ代だいはいつ来くるのだろうか。

  When will the next ice age come?