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简介：These child prodigies of the animal kingdom have feathers and beaks – and very special skills!
The Keas of New Zealand are the only parrots that live in snowy mountain areas. They like testing their brains, solving puzzles and challenging tourists: they unscrew bottle-tops, dismantle windscreen wiper blades and tear open rucksacks. They seem so determined you’d think they have ...。结构：两种疫苗都依赖mRNA或信使RNA起作用，尽管它们的结构和组成略有不同