The Mississippi is one of 49 fast attack submarines in the U.S. Naval fleet.

密西西比号是美国海军舰队49艘快速攻击潜艇之一。

Australia will buy as many as five nuclear-powered attack submarines from the United States to counter China's growing naval reach.

澳大利亚将从美国购买多达5艘核动力攻型潜艇，以匹配上中国日益增长的海军力量。

There is something about this group that  has turned them into living attack submarines.

这个群体的某种特质使他们变成了活生生的攻击潜艇。

The USS Hartford, a billion dollar nuclear attack submarine is participating in Ice X 2016.

价值十亿美元的核攻击潜艇 USS Hartford 正在参加 Ice X 2016。

This would sit on the sea floor and launch, at an appropriate moment, a torpedo to attack an enemy submarine.

这将位于海底并在适当的时候发射一枚鱼雷来攻击敌方潜艇。

Both classes of these submarines are attack submarines who aren't armed with nuclear weapons but are rather designed to instead engage and destroy enemy surface ships and submarines or covertly insert Special Forces somewhere.

这两级潜艇都是攻击型潜艇，它们不配备核武器，而是专门用于攻击和摧毁敌方水面舰艇和潜艇，或在某处秘密部署特种部队。