Time flies, doesn't it?

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

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

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

Please clean up your room right now.

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

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

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

Toshin came up with a sagacious way to solve the problem.

He is outstanding in his field.