1. Dr. Johnson is a renowned martianologist who has dedicated his career to studying the geology and atmosphere of Mars.
约翰逊博士是一位著名的火星学家，他致力于研究火星的地质和大气。
2. The discovery of water on Mars has sparked even more interest and excitement among martianologists around the world.
火星上水的发现激发了全球火星学家们更大的兴趣和激情。