Principles Covered: Design, value structure, lighting, rhythm.
覆盖原则：设计，价值结构，照明，节奏。
The lighting device can be other structure as well, with a micro-bulb light source.
照明装置还可以是其它结构，光源也可以是微型灯泡。
The lighting device can be other structure as well, with a micro-bulb light source.
照明装置还可以是其它结构，光源也可以是微型灯泡。
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