这样一来，窥视者在其他角度看过去，由于眼睛接收不到来自屏幕的光线，看上去仿佛屏幕根本没有点亮，从而实现宏观的防窥的效果。
M&S Christmas cheer hit by uncertain outlook for UK
。服务器推荐对此有专业解读
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It is not the first time an advert for the video game series has been banned.
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