submarine base

基本解释

Still, the HMS Vanguard was towed back to a submarine base in Scotland with visible dents and scrapes, the BBC reported.
但是“前卫号”被拖回位于苏格兰的一个潜艇基地维修，据BBC报道，艇身可见凹坑和划痕。
And according to satellite pictures published two years ago, on the far side of a peninsula that juts into the bay lie the cavernous entrances to a vast underground submarine base.
两年前发布的卫星照片显示，在伸入海湾的半岛远端，还坐落着一座洞窟似的入口，通往巨大的地下潜艇基地。
robertafnani.com
Third, it continues apace to build capability, including an underground submarine base on Hainan Island, and an aircraft carrier battle group, due to be deployed in the next few years.
第三，继续加快实力建设，其中包括海南岛的地下潜艇基地以及一个航母战斗群，预计不到数年即可完成部署。

On Hainan Island it has built a new, large naval base with underground submarine pens, which can support both strategic and nuclear-attack submarines.
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