We must strive to protect the environment of the Earth.

He was promoted to an executive in the company.

This area is rich in peridotite.

Cheers rose from the spectator's seat.

This meteorite contains olivine.

He likes watching soccer games.

We have maintained a good relationship for a long time.

After a cold front passes, the temperature drops sharply.

He works on an aircraft carrier.

My mother goes to the hospital every day to nurse my grandmother.