He is an expert in seismology.

A large earthquake occurred yesterday, throwing the entire town into chaos.

A large earthquake occurred yesterday, throwing the entire town into chaos.

The seismologist is studying earthquake prediction and disaster prevention.

He is an expert in seismology.

The police are continuing to search for the missing person.

The trailing edge of this airplane has a very unique shape.

After school, we study at the library.

He suffered a minor contusion on his occiput.

He sneaked into the school through the back gate.