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这些电子数据大部分通过卫星传送,其中多数卫星是不受保护的商业系统。
Much of this electronic data is transmitted by satellites, most of them unprotected commercial systems.
youdao
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这些电子数据大部分通过卫星传送,其中多数卫星是不受保护的商业系统。
Much of this electronic data is transmitted by satellites, most of them unprotected commercial systems.
youdao