most amazing machines he world

most amazing machines he world..
While our technical instruments and communication devices keep getting smaller, our machines just keep getting bigger. There is now aircraft large enough to allow other aircraft to piggyback a ride, ships that pile on other ships as cargo, and bulldozers that need more than one operator in the driver’s seat.

All of these are mind-boggling, yet there are even larger and stranger machines out there, because we won’t be satisfied until we build something so large it can poke its nose into outer


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