The chief lesson this teaches us is that making new equipment affordable has become a major problem in the research and development (R&D) process of any major new piece of military hardware.
这给我们的主要教训就是：能承受新装备的开销已成为研究开发军事新硬件设施过程中的主要问题。
The chief lesson this teaches us is that making new equipment affordable has become a major problem in the research and development (R&D) process of any major new piece of military hardware.
这给我们的主要教训就是：能承受新装备的开销已成为研究开发军事新硬件设施过程中的主要问题。
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