但是只看到它慢慢沉下时的磷光。
部分磷光体容易丢失。
科研小组表示，这种磷光性的物质不需要放在阳光下直射。
The team said the phosphorescent substance did not need to be exposed to direct sunlight.
我这样做是有原因的：我一直都想做一个浑身放射磷光的雪天使。
I did it for one reason: I had always wanted to make phosphorescent snow angels.
磷光层吸收某些蓝色光线之后，就能被“启动”进入一种兴奋状态。
The phosphor absorbs some of the blue light and is "pumped" into an excited state.
磷光层吸收某些蓝色光线之后，就能被“启动”进入一种兴奋状态。
The phosphor absorbs some of the blue light and is "pumped" into an excited state.
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