His article for National Geographic details the challenges he undertook to achieve the longest manned balloon flight.
他为国家地理杂志撰写的文章。详细披露此次历史上飞行时间最长的载人气球遇到的种种艰难险阻。
His article for National Geographic details the challenges he undertook to achieve the longest manned balloon flight.
他为国家地理杂志撰写的文章。详细披露此次历史上飞行时间最长的载人气球遇到的种种艰难险阻。
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