如果对曝露的风险不完全了解，任何去其它行星(如火星)的载人探测任务都可能危及宇航员的健康。
Any manned mission to other planets, such as Mars, could endanger astronauts' health if the risks of exposure are not fully known.
迄今为止，围绕月球，共开展了73项科学探测任务，载人或者无人，以了解月球的化学成分，尤其是发现水，更是重点关注的项目。
There have been 73 missions, manned and unmanned, to the Moon, and understanding its chemical composition, particularly finding water, has always been a priority.
该任务将质疑SLS对于深空探测是否实际需要，尤其是SLS猎户座载人飞行一直到2021年还没有开始，Muncy说。
The mission would call into question whether SLS is actually needed for deep space exploration, especially with crewed Orion flights on SLS not beginning until 2021, Muncy said.
NASA提出的载人火星探测任务，计划于2030年发射，我们期待科学家们更多的研究成果。
AS we get closer to NASA's proposed manned mission to Mars, which is currently scheduled to take place in 2030, we can expect more research efforts to be attempted.
NASA提出的载人火星探测任务，计划于2030年发射，我们期待科学家们更多的研究成果。
AS we get closer to NASA's proposed manned mission to Mars, which is currently scheduled to take place in 2030, we can expect more research efforts to be attempted.
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