a hemispheric-scale long but narrow topographic depression of the seabed.

listen to the pronunciation of a hemispheric-scale long but narrow topographic depression of the seabed.
Английский Язык - Английский Язык

Определение a hemispheric-scale long but narrow topographic depression of the seabed. в Английский Язык Английский Язык словарь

A hemispheric-scale long but narrow topographic depression of the seabed.
oceanic trench