The Lurmen healer Wag Too somersaults in order to traverse distances quickly, rolling around in a ball at fast speeds.
为了长途跋涉更快，勒明医生瓦格·图蜷缩成一个球，高速翻滚前进。
2
Over days and years a big enough sail, say a mile on a side, could reach speeds of hundreds of thousands of miles an hour, fast enough to traverse the solar system in 5 years.