Something the Germans used on their U-boats and the output of that is a scrambled message.
德国人在他们的U型潜水艇所用到并输出的东西是一个加密信息。
2
After German U-boats torpedoed numerous British ships, a 2,700-strong fleet of cheap- and-cheerful "Liberty ships" was introduced to replace the lost vessels, providing a lifeline for the 29 British.
在德国的 U 型潜艇用鱼雷击沉了大量的英国船只之后，一支由2700艘廉价而令人欢呼的“自由船”船队被引进来，以替换失去的船只，为29名英国人提供了一条救生索。
3
The casablanca conference had proclaimed the defeat of the u-boats as our first objective.