... 人体检知感测器，激光保全设备 Laser Security/Surveillance 光计数器 Photo Counters 激光公害检测设备 Laser Pollution Detective Devices ...
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photo above: The counters in our kitchen are made of soapstone, which is the same material used in science labs.
上图：我们厨房的台面用的材料和实验室是一样的，皂石。
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