"In these days, the construction and guidance of airships have been improved greatly", wrote The Providence Journal, "and it is supposed, both by the Parisian experts and by the Swedish scientists who have been assisting M. Andree, that the question of a sustained flight, in this case, will be very satisfactorily answered by the character of the balloon, by its careful guidance and, providing it gets into a Polar current of air, by the elements themselves."
瞧 我 知道 困? 难 很大 我?? 没 房子? 没 固定 舞步LASER-wikipedia2 LASER-wikipedia2