He is studying about the metamorphosis of insects.

This is an old Japanese textbook that explains the usage of '變格' in detail.

His life has experienced a major alteration.

He decided to alter the plan.

In that country, coups d'etat occur frequently.

This town has changed greatly recently.

The change in this town is surprisingly fast.

This math problem includes multiple variables.

The blue-ringed octopus is a very dangerous creature, its venom can kill a human.

He likes to take a walk in the park at dusk.