The term '地圈' refers to the solid part of the Earth.

My friend is participating in a clinical trial for a new drug.

He went to the location himself to find out the truth about the place.

This sensor can detect abnormalities at an early stage.

This device can detect abnormalities at an early stage.

His expertise was very helpful to our project.

He went to Tokyo for an important interview.

The Japanese government is considering amending the constitution.

Japan once held command of the Pacific Ocean.

I want to try walking the Tsugaru road.