English Answer:
- 2. The main street of the city is very crowded buildings in the world - buildings that are not beautiful
Russian Translation:
- 2. Главная улица города - это очень переполненные здания в мире - здания, которые некрасивы.
Brief Explanation: The sentence implies a contrast between the main street and other buildings. 'Crowded' suggests a busy, perhaps unappealing, main street that contrasts with the idea of beauty.