Today, we don't talk about flying transonically, or even supersonically, we talk about flying hypersonically -- not Mach 2 or Mach 3, Mach 20.
Azi nu vorbim despre zbor transonic, şi nici măcar despre zbor supersonic, vorbim despre zbor hipersonic - nu 2 Mach sau 3 Mach, ci 20 Mach.