secret code
英 美
The quality and provenance of your writing paper is like a secret code.
信纸的质量和产地似乎成了一种密码。
Nothing needed to be scratched off—the ticket could be cracked if you knew the secret code.
根本就不需要刮掉任何东西——如果你知道这个秘密,彩票就可以被破解。
With this so-called Watermark Ink writing, the chips could also serve as secret code devices.
随着所谓的水印墨水的应用,这种晶片也可以用作为秘密代码设备。
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