I specialize in training horses.

He trains his dog every day.

He is living in a frontier area.

The instructor taught us new techniques.

Due to the recession, many companies went bankrupt.

He fractured his thoracic vertebra.

When the strong shaking occurred, we immediately evacuated.

The coexistence of humans and nature is important for the sustainability of the Earth.

Humans and nature should coexist.

The vice-principal plays a crucial role in helping run the school.