The pictured is a curling-like amphibious droid, one of the two robots to perform the underwater torch relay on Wednesday. (Photo: 31 Research Institute of the Third Academy of CASIC) Beijing staged a futuristic show in its Olympic torch relay on Wednesday, presenting the world a fantastic underwater rendezvous between two robotic torch bearers, marking a first of its kind in the Olympic history. It is worth noting that, also a first in the Olympic history, that the underwater flame of the torches in the Beijing Olympic relay adopted a special smoke-free environmental-friendly gaseous fuel, and designers with the 31…