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

This device can detect abnormalities at an early stage.

This sensor can detect abnormalities at an early stage.

The geosphere refers to the solid part of the Earth.

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

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

They have a good relationship.

He and I are good friends.

My grandfather used to be a steam locomotive driver.

This problem is a piece of cake.