I climbed three mountains.

When spring comes, I go to the mountains to look for bamboo shoots.

After the earthquake, we were forced to live in evacuation shelters.

When the earthquake occurred, we immediately went to the nearest shelter.

In case of a fire, please use this fire escape.

Due to the earthquake, an evacuation order was issued by the city.

His problem feels like a fire on the opposite shore.

At the scene of the fire, the firefighters were desperately putting out the fire.

He is an expert in embryology, studying the developmental processes of many kinds of organisms.

The process of embryogenesis is very complex, with continuous cell division and differentiation.