Nuclear submarines are able to provide their own infinite supply of air, water and power. Their only limitation for staying submerged is the amount of food on board.

核潜艇可以无限止地供应空气，水和动力，唯一对潜水时间有限制的是艇上的食品储量。

youdao

Japan has already provided around 20 billion yen to help dismantle more than 70 retired nuclear submarines believed to have been abandoned in the Russian Far East.

日本已经提供了约20亿日元，帮助拆除70多个已被俄罗斯遗弃在远东地区的退役核潜艇。

youdao

STEALTH bombers, giant aircraft carriers and nuclear submarines are the modern symbols of military might, but they are of limited use in today's "asymmetric" conflicts.

隐形轰炸机、巨大的航空母舰和核动力潜艇是军事力量的现代象征，但是在今天的“非对称战争”(译注2)中已经很少需要用到它们了。

youdao

Steve Andreasen, is a former arms control expert on the National Security Council, "It places limitations on strategic nuclear delivery vehicles - that is long-range bombers and long-range intercontinental ballistic missiles on submarines and based on land.

VOA: standard.2009.04.08

Further write-offs loom over two contracts, for Nimrod marine-surveillance aircraft and new Astute-class nuclear submarines.

ECONOMIST: Britain's defence champion is under fire

It was very expensive and took longer to build than other Soviet nuclear submarines.

BBC: Eyewitness: Tragedy of Soviet nuclear submarine K-27

Devonport is home to the Royal Navy's seven Trafalgar-class nuclear-powered submarines and has four decommissioned nuclear submarines awaiting dismantling.

BBC: Tritium is released from submarine reactors