They could not provide adequate air cover for ground operations.
他们无法为地面作战行动提供足够的空中掩护。
Ames is responsible for the ground system development, mission operations and science data analysis.
埃姆斯研究中心负责地面系统规划、任务运作和科学数据分析。
Ames is responsible for the ground system development, mission operations and science data analysis.
埃姆斯研究中心负责地面系统规划、任务运作和科学数据分析。
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