The book — part of a batch of British secret service files made public for the first time — included an example of a code hidden in a drawing of three young models.

这份文件是英国安全部门首次公开的机密文档的一部分，文件包括藏在3名时装模特服装图纸中的口令。

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It's a drawing of an elevator. And the secret says: 'I feel guilty when I take elevators for one floor, so I limp when I get out. '

“这幅画是电梯。这条秘密说的是：“我坐电梯只坐一层时觉得惭愧，所以我出电梯时瘸着走（假装腿脚不好）。”

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