Last Updated：2025/11/26
Sentence
衛星幹線通信の監視・収集を行う国際的な信号諜報（SIGINT）ネットワークは、同盟機関が大陸を越える秘密通信を追跡できるようにした。
Quizzes for review
Echelon monitored satellite trunk communications, enabling allied agencies to track covert transmissions across continents.
See correct answer
Echelon monitored satellite trunk communications, enabling allied agencies to track covert transmissions across continents.
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