A back vowel is a vowel that is pronounced at the back of the mouth.

A back vowel is a sound where the back of the tongue approaches the palate.

There is a garden inside this house.

Where is Mrs. Oku?

His English pronunciation is very natural.

He is practicing the pronunciation of Japanese.

He took out a book from the bookshelf at the back of the room.

This book has a stiff binding.

The matron is a beloved figure in our school.

He opened his mouth in surprise.