The test measures oxygen levels indirectly, by shining certain wavelengths of light through a foot or finger onto a sensor on the other side.
通过特定波长的光波，照射脚趾或手指，结果显示于另一端的监测仪上，用于简接测定血氧饱和度。
Zhao Puchu, a master of Buddhism used a metaphor "one moon shining over three rivers" to describe the relationship between real finger relics and its shadow relics.
这三件仿制品后来被称为“影骨”，赵朴初用“一月映三江”来描述仿制品和真正的佛指（灵骨）之间的关系。
Zhao Puchu, a master of Buddhism used a metaphor "one moon shining over three rivers" to describe the relationship between real finger relics and its shadow relics.
这三件仿制品后来被称为“影骨”，赵朴初用“一月映三江”来描述仿制品和真正的佛指（灵骨）之间的关系。
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