The food on submarines is surprisingly good, but spending months under water can be tough.

潜艇上的食物出奇的好，但是在水下呆几个月还是很艰难。

The British Navy was fighting for control over the sea with the Italian Navy but the often crystal-clear waters were a death trap for submarines on both sides.

英国海军正在与意大利海军争夺对这片海域的控制权，但这片清澈的水域对双方的潜艇来说都是死亡陷阱。