继任的系统同样是设计用来2020年重返月球的，同时作为远征火星的踏脚石。
That successor system is also designed to return humans to the moon by 2020, as a stepping stone to visiting Mars.
结论关节镜下前交叉韧带重建术后的系统康复对患者肌力、ROM、ADL的恢复具有重要意义，有利于患者早日恢复膝关节功能，重返社会，恢复原工作。
Conclusion Systematic rehabilitation excises promote the recovery of the strength of the leg muscles, ROM, and ADL, which make the patients get excellent knee function, go back to work early.
猎户座探险车将乘载新的核动力火箭飞向太空，包括一个发射堕胎系统，在出现故障的情况下可以允许宇航员组件脱离并重返地球。
The Orion, which is to be flown into space on the new Ares rocket, includes a launch abort system that will allow the crew module to separate and return to earth in case of a malfunction.
这块用砂石和花岗岩碎块制作的0.8公顷模拟月球表面，让工程师们可以为了美国太空总署(NASA)重返月球的计划而对各种系统和概念进行测试。
The 2-acre (0.8-hectare) mock moon surface, made of sand and crushed granite, allows engineers to test systems and concepts as they prepare for NASA's return to the moon.
这块用砂石和花岗岩碎块制作的0.8公顷模拟月球表面，让工程师们可以为了美国太空总署(NASA)重返月球的计划而对各种系统和概念进行测试。
The 2-acre (0.8-hectare) mock moon surface, made of sand and crushed granite, allows engineers to test systems and concepts as they prepare for NASA's return to the moon.
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