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¿ìÁø¿ì (2023-10-04)
Ãß¼® ¿¬ÈÞ Ã¹³¯ ¼­¿ï¼­ 40´ë ¼ûÁøä ¹ß°ß¡¦°íµ¶»ç ÃßÁ¤
  to a kite-surfing giant. Another navigated the oceans between China and Brazil this summer with steel and composite-glass sails as high as three telephone poles. Both harness a natural propellant that oceangoing vessels have depended on for centuries: the wind. And they¡¯re...