他们把密电码藏在一棵树下。

They hid the code under a tree.

在一个房间的门上有“密电码发送室”的标牌。

On one of the doors of this building there is a sign ‘Secret telegrams sending’.

他们的阴谋败露是因为一次偶然将装有密电码的空硬币给了布鲁克林的一个报童。

Their schemes began to unravel when one of their hollow nickels containing a coded message accidentally ended up in the hands of a Brooklyn newsboy.

美日对抗一开始，日军总能用各种方法破译美军的密电码，这令美军在战场上吃尽了苦头。

The start against the United States and Japan, the Japanese military always used various methods to decipher the secret code, which made the U.