1. Solar panels are fixed on flat roofs and two wind turbines create a haunting whine that mingles with the chatter of children from a classroom.
2. mingles
2. When an introverted culture mingles with the diversity of the outside " pearls of thinking ", who knows what will be discovered?
3. The lunar light seeping into the lounge from the glass ceiling mingles with the artificial lights that spotlight the rocky fountain resting in the corner.
4. At night, the chirping of crickets mingles with the laughter and conversation of its residents.