import Foundation
let dynamicsubstring1 = "double-quoted substring1"
let dynamicsubstring2 = "double-quoted substring2"
// Using Swift string interpolation with "\(variable)"
let str = "This is a string with \"\(dynamicsubstring1)\", and \"\(dynamicsubstring2)\" inside."
print(str)
/*
run:
This is a string with "double-quoted substring1", and "double-quoted substring2" inside.
*/