What does La calle es una selva de cemento mean?

Answer 1

It literally means, "The street is a jungle of cement." Or, it could be interpreted, "The street is a cement jungle."

Answer 2

"La calle es una selva de cemento" translates to "The street is a concrete jungle" in English. It conveys the idea that the urban environment is like a wild and untamed place due to its chaotic and unpredictable nature.