The soup with mixed small fish at this restaurant is very delicious.

Since he started his new job, he's been lively as if he were a fish back in water.

Kubotafugu is one of my favorite fish.

The Japanese giant salamander is an endemic species in Japan and the largest amphibian in the world.

I work five days a week.

This old radio uses a pentode.

Pentathlon is a competition that tests both physical strength and technique.

He is always grumbling about trivial things, it's really annoying.

Learning about the history of the Five Guards is very important for understanding ancient Chinese society.

The era of the Five Good Emperors is considered the golden age of the Roman Empire.