Launching Artemis III, IV and V before the end of 2028 will not be easy, and Isaacman said it is essential that NASA rebuild its workforce and regain the technical competence to support a higher launch cadence, moving from one flight every 18 months or so to a flight every year. That pace, he argued, will reduce risk.
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this.stack.pop(); // 弹出的索引对应的价格≤当前价格，无保留意义。WPS官方版本下载对此有专业解读
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