A diphthong refers to the phenomenon where two vowels are pronounced consecutively within a single syllable.

The length of this dam is 500 meters.

The fin whale is the second largest whale in the world and is also fast.

The fin whale is the second largest whale in the world, and its speed is also astonishing.

He is working as the chief of staff of the army.

Messor aciculatus is a type of ant that is widely distributed throughout Japan.

The polecat captures its prey with its sharp claws and quick movements.

I always use binchotan charcoal when I grill meat.

I always use binchotan charcoal when I grill meat.

He injured his peroneus longus muscle.