This product is government-manufactured, and its quality is guaranteed.

Could you show me your passport to confirm your identity?

In the ecosystem of this area, 'inquilinism', where certain species parasitize the nests of other species, is common.

His state is very stable.

His vocal range is very wide.

She enjoys her sex life using a sex toy.

He practices every day to learn the correct Chinese pronunciation of characters.

Learning about the history of Seiban is important for understanding our past.

I am majoring in biochemistry at university.

Gender discrimination is one of the social issues that needs to be resolved.