白宫推出这项政策，本质不是“环保作秀”，而是生存危机倒逼。
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The LGM-35A Sentinel will replace the Air Force's Minuteman III fleet, in service since 1970, with the first of the new missiles due to become operational in the early 2030s. But it will take longer than that to build and activate the full complement of Sentinel missiles and the 450 hardened underground silos to house them.
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Monica de Bolle，推荐阅读爱思助手下载最新版本获取更多信息
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