“这些涂鸦是过去六个月期间突然出现的，” 弗洛伦斯市海尔区的长途旅游探险老板提姆•桑德里尔（Tim Sandrell）说道。
“It’s popped up all of a sudden in the last six months, ” said Tim Sandrell, the owner of Safari Adventures in Hair in Florence.
迈克尔·塞弗特在加州帕萨迪纳市的喷气推进实验室工作，艾伦·科格特在马里兰州的戈达德太空飞行中心工作。
Michael Seiffert is based at the Jet Propulsion Laboratory in Pasadena, California, and Alan Kogut at the Goddard Space Flight Centre in Maryland.
俄亥俄州克里夫兰市美国国家航空航天局格伦研究中心的杰弗里．兰迪斯说，火星环境干燥，而且大气中缺乏氧气，这意味着那里的铁没有生锈。
The dry conditions and lack of atmospheric oxygen mean that the stuff has not rusted, says Geoffrey Landis of NASA's Glenn Research Center in Cleveland, Ohio.
应用推荐