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“一角鲸”级核潜艇于1969年服役。25年后,该艇艇艉安装了一个突出的壳体。在它里面是什么呢?目前还是一个迷,供大家猜想。
The whale class nuclear submarine was commissioned in 1969. Twenty-five years later, the boat was fitted with a prominent shell. What is in it? At present, it is still a fan for you to guess.