More martial secrets unveiled by rovers orbiter part 美欧掀起火星探测新高潮下
Nasa ' s latest mission to mars is on its way 美宇航局开始最新的火星探测计划。
The track record of mars missions has not been good 火星探测任务的业绩一直不大好。
Russia also plans new efforts to explore mars 俄还计划新的火星探测。
It is estimated that around two in every three russian and u . s . missions to mars have been whole or partial failures 据估计,俄罗斯和美国进行的火星探测任务中,约有三分之二是完全或部分失败的。