翻译练习NASARoverLandsOnMarsToLookForSignsOfAncientLife（2）

　　NASA Rover Lands On Mars To Look For Signs Of Ancient Life(2)
　　NASA登陆车在火星降落，寻找远古生命迹象（2）
　　火星生命到底存不存在？！
　　The car-size, plutonium-powered vehicle arrived at Jezero Crater, hitting NASA＂s smallest and trickiest target yet: a 5-by-4mile strip on an ancient river delta full of pits, cliffs and rocks. Scientists believe that if life ever flourished on Mars, it would have happened 3 billion to 4 billion years ago, when water still flowed on the planet.
　　这个汽车大小，由钚驱动的小车车在耶泽洛陨石坑着陆，直击NASA亦今为止最小也是最难的目标：一块5乘4英里面积，狭长的远古河道三角洲，到处是深坑，悬崖与石块。科学家们相信，如果火星上曾有过繁荣的生命，那应该存在于30亿到40亿年前，那时这个星球的水仍然在流动。
　　Over the next two years, Percy, as it is nicknamed, will use its 7-foot(2-meter) arm to drill down and collect rock samples containing possible signs of bygone microscopic life. Three to four dozen chalk-size samples will be sealed in tubes and set aside to be retrieved eventually by another rover and brought homeward by another rocket ship.
　　未来两年，这台名叫＂珀西＂的探测器将使用它7英尺（2米）长的手臂钻探与收集有可能包含远古微生物痕迹的石块样本。三到四十分粉笔大小的样本将被封存进管子并最终由其它探测器取回，再由一艘火箭带回地球。
　　The goal is to get them back to Earth as early as 2031.
　　目标是最早在2031年将它们带回地球。
　　Scientists hope to answer one of the central questions of theology, philosophy and space exploration.
　　科学家们希望能回答宗教、哲学与空间探索三大领域的最核心问题之一。
　　＂Are we alone in this sort of vast cosmic desert, just flying through space, or is life much more common? Does it just emerge whenever and wherever the conditions are ripe?＂ said deputy project scientist Ken Williford. ＂We＂re really on the verge of being able to potentially answer these enormous questions.＂
　　＂在这个浩瀚的宇宙荒漠中我们是否孤独，只有我们飞越空间，还是生命其实非常普通，只要条件成熟随时随地就会出现？＂副项目科学家肯・威利福德说：＂我们真的已经走到了这些重大问题答案的边缘。＂
　　China＂s spacecraft includes a smaller rover that will also seek evidence of life, if it makes it safely down from orbit in May or June. Two older NASA landers are still humming along on Mars: 2012＂s Curiosity rover and 2018＂s InSight.
　　中国的航天器包括一个小一点的探测器也将用来搜寻生命，如果它能在五月到六月能从轨道安全着陆。两台更老一些的NASA登陆器仍然在火星上工作：它们是2012年的好奇者号和2018年的洞察号。