If the system in question is a message in a series of digital bits encoded in the polarisation of light, this means that intercepting and reading the message can no longer be done surreptitiously.
如果所提到的系统是用偏振光的形式，以一连串数字比特流编码来表示信息的话，就意味着截取并阅读信息没法再偷偷摸摸地进行了。
An intercepting panel is arranged on the circumference of the light outlet of the reflector.
所述反射器的出光口的周向设有截光板。
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