The Navy was sufficiently concerned about the danger of crews' receiving and carrying out unauthorized launch orders that it overhauled the entire system.

海军非常担心控制人员接收并执行未经授权发射命令的危险，因此对整个系统进行了彻底检查。

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But since the crews would have been unable to do so, the 50 rockets would have accepted the launch instruction, ignited their boosters and risen out of their silos.

但因为控制人员不能这样做，这50枚火箭会接受发射指令，点燃推进器并从发射井升空。

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Aboard these orbiting craft, crews test new technologies, conduct research and launch and repair orbiting satellites and other craft.

这些轨道飞船上，小组测试新技术，开展研究，开展维修轨道卫星和其它工艺。

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Pinsent, who was immediately behind the two eight-man university crews on a launch with umpire John Garrett, initially thought he had spotted a balloon.

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But until the commercial astronaut taxis are ready to go, the nation will be dependent on Russian Soyuz spacecraft to launch its crews to low-Earth orbit.

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An attempt to launch a lifeboat by ferry crews after the man was spotted in the sea had to be abandoned because of the weather conditions.

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