underfit stream

A river that is too small to have eroded the valley or passage in which it flows.

日本語の意味

谷や流路を十分に浸食できないほど小規模な川

Geologists concluded that the underfit stream winding through the wide valley could not have carved the landscape itself.

地質学者たちは、広い谷を蛇行するその川は谷を侵食するには小さすぎるため、その川が地形を作ったとは考えられないと結論づけた。

意味（1）

A river that is too small to have eroded the valley or passage in which it flows.

underfit streams

（ plural ）