Polio breaks out in Rio de Janeiro, the serum is in Santiago and there's only one way to get the medicine where it's desperately needed: flown in by daring pilots who risk the treacherous weather and forbidding peaks of the Andes.任(👤)务(👆)说明：好的知识传(chuán )承，会让种(zhǒng )族变得(dé(⚽) )更加(jiā )强大，十年树木百年树人，为了种族的未来，加油(yóu )吧！