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EntertainmentHistory of formation and development of air conditioners
Air-conditioner (air conditioner) is a popular household electrical product all over the world.Who invented air conditioning?
The birth of air conditioners was a revolution of humans at that time.
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- Why are there no male queen bees?
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- Mystery of dozens of giant circular structures at the bottom of Lake Michigan
- US ship becomes world's largest artificial reef
- Wreckage of mysterious missing bomber found after 80 years
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Why are there no male queen bees?
The mystery of the 'doomsday' cinema, built in the desert but not a single person has visited for more than 30 years
Mystery of dozens of giant circular structures at the bottom of Lake Michigan
US ship becomes world's largest artificial reef
Wreckage of mysterious missing bomber found after 80 years
Surprised to know the identity of the Russian missile debris 'hunter'
Australia releases chemical composition data of nearly 1 million stars
NASA shuts down plasma device to save spacecraft 20.5 billion kilometers away
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