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RC helicopters have quite a few differences than passenger and military helicopters, which is why they can fly upside down. Here's what you need to know.
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YouTube on MSNDIY Pencil Fidget Spinner! Spinner Toys & TricksIn this exciting DIY tutorial, learn how to create your very own pencil fidget spinner! Perfect for spinner toy enthusiasts, ...
China has revealed a mosquito-like flying robot designed for stealth missions, triggering global concern about its potential ...
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