人类想要在火星登陆的计划还需要等很长的时间才能实现.只有在科学家们能够研究并获取更多围绕在火星周围的大气层中的资料以后,人类才有可能能够进行登陆火星的尝试.如果在将来的某一天可以有人造卫星能够被发射并环绕着火星获取火星的更多信息,科学家们将能够获取大量关于火星的资料.一条令人关注的关于用来测量火星大气的建议已经被提出.
trsl.it will be a long time before any landing on Mars can b
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英语翻译It is before long that he will return to his native land