裸体 (luǒ tǐ): Khỏa thân

That painter likes to ask models to sit naked by the window, letting sunlight fall naturally on their skin.

Being naked in public is illegal, so they were warned by the police on the beach.

She went into the bathroom, took off her clothes, stood naked in front of the mirror, and carefully checked the wounds on her body.

The child suddenly ran out of the bathroom and danced naked in the living room, making the whole family burst out laughing.