But anyone could see that a U-boat force just three times larger, enjoying a corresponding degree of success, would have a crippling effect both on the level of current supply, and on the total stock of shipping.
但是大家看到，U艇的力量现在增大到三倍，而且带来了相应加倍的效果，这会使供给力和运力储备变得逐渐枯竭。
Each U-boat was sinking more than twenty ships in its life-time, and there was no counter-strategy while the U-boat remained invisible.
每艘潜艇至少会击沉20艘船，而且当它潜入水底时，拿它一点办法也没有。
It was the logical, rather than the physical, power of the U-boat that was its strength.
要想对付潜艇，相比于物理的力量，更关键的是逻辑上的力量。
It was the German failure to follow up this tremendous advantage against its only remaining enemy that allowed a period of reprieve in which to counter this logical power with new weapons of information and communication.
德国的失败就在于，没有利用这个极大的优势，来追打它唯一存留的敌人，反而给了这敌人喘息之机，容他们发展出了新型的通信武器，来发挥逻辑的力量。
Radio direction finding and radar had already joined sonar in taking the Admiralty a short way beyond the resources of Nelson. The work of Hut 8 was still far behind.
无线电测向和雷达已经加入了声纳，使海军部离纳尔逊的资源很近。“小屋”8的工作仍远远落后。
Alan had begun his investigation of the naval Enigma messages on his own, but then was joined (for a time) by Peter Twinn and Kendrick.
艾伦现在已经开始研究海军谜机了，后来（有段时间）彼得·吐温和肯德里克也加入进来了。
Clerical work was done by women who would be called 'big room girls'.
文书工作由一些被叫做“大屋女孩”的女性人员来做。
Then in June 1940 there was a new mathematical recruit:
1940年6月，又雇用了一名新的数学家：
Joan Clarke, who was one of several 'men of the Professor type' to be a woman.
琼·克拉克，她是几个“男专家”中的一员，但实际上是个女性。