海溝
Meanings
1
oceanic trench; deep-sea trench
A long, narrow, deep depression in the ocean floor; a technical term in geology and oceanography.
The Mariana Trench is the deepest oceanic trench in the world.
Earthquakes frequently occur along the Japan Trench.
Usage patterns
- 〈場所〉に海溝があるthere is an oceanic trench at/in a place
There is a deep trench called the Japan Trench in the Pacific Ocean.
- 海溝に沈むto sink into an oceanic trench
The sunken ship sank down into the deep trench.
- 海溝を調査するto survey/investigate an oceanic trench
The researchers surveyed the trench using an unmanned probe.