The union will start with a European-led orbiter in 2016, and continue with surface rovers in 2018, and then perhaps a network of landers in 2018.
这个联合项目将在2016年以一个欧洲主导的轨道飞行器项目开始,2018年开始火星车项目,之后是2018年的着陆工程。
The union will start with a European-led orbiter in 2016, and continue with surface rovers in 2018, and then perhaps a network of landers in 2018.
这个联合项目将在2016年以一个欧洲主导的轨道飞行器项目开始,2018年开始火星车项目,之后是2018年的着陆工程。
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