Le projecteur peut utiliser pour intimider un assaillant s’il voit le point vert. La lumière du projecteur laser est plus brillante que le rouge, mais les deux ne sont PAS visibles à la lumière du soleil, ce qui est bon pour Noël.
Vertical farming Does it really stack up? Agriculture: Growing crops in vertical farms in the heart of cities is said to be a greener way to produce food. But the idea is still unproven
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