Britain has started work on a new fleet of nuclear-powered attack submarines that are likely to enter service towards the middle of the century, days after signing a new defence accord with Australia and the US to help Canberra acquire similar vessels.
英國已開始設計新一代核動力攻擊潛艦，這支潛艦艦隊很可能在本世紀中葉成軍。近日，英國剛與澳洲和美國簽署一項新的防務協議，內容包括幫助堪培拉方面獲得同類型潛艦。
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