数すう億おく年ねん

Meanings

1

several hundred million years

Refers to a very long span or age measured in hundreds of millions of years; common in geology, evolution, astronomy, and other scientific or historical contexts.

この岩がん石せきは数すう億おく年ねんかけてできた。
This rock formed over several hundred million years.
生せい命めいの進しん化かには数すう億おく年ねんという時じ間かんがかかった。
The evolution of life took several hundred million years.

Usage patterns

数すう億おく年ねん前まえseveral hundred million years ago
この地ち層そうは数すう億おく年ねん前まえに形けい成せいされた。
This rock layer was formed several hundred million years ago.
数すう億おく年ねんの歴れき史しa history spanning several hundred million years
地ち球きゅうには数すう億おく年ねんの歴れき史しがある。
The Earth has a history spanning several hundred million years.
数すう億おく年ねんかかるto take several hundred million years
この山さん脈みゃくができるまでに数すう億おく年ねんかかった。
It took several hundred million years for this mountain range to form.