He is troubled by his obsession.

My grandmother decided to get a bridge.

We must strive to protect the natural environment.

This document contains environment-dependent characters.

We should recycle to prevent environmental pollution.

He was surprised when he looked at the speedometer of his new car.

I commute to work every morning by high-speed train.

A news flash about an earthquake was broadcasted on TV.

I flashed the news about the earthquake.

He is my beloved son, my greatest pride.