荧光中心 
fluorescence centre
- 美国宇航局戈达德宇航中心的研究人员绘制了第一套陆地植物荧光地图。微红的荧光是叶子释放出因光合作用产生的一种副产物。
Researchers at NASA's Goddard Space Flight Center have produced the first global maps of land-plant fluorescence, a reddish glow that leaves emit as a byproduct of photosynthesis. - 在尘埃云中心的细丝发出微弱的红色荧光,这是由于一些尘埃微粒能有效地将恒星发出的不可见紫外线转换成可见的红光。
Central filamentsof the dusty clouds glow with a faint reddish photoluminesence as some dust grains effectively convert the star's invisible ultraviolet radiation to visible red light. - 防晒建议:在灯火通明的购物中心里扫货两小时,几乎等于在大太阳底下曝晒一小时,因为商场里的各种荧光灯也会产生紫外线辐射。
Solution: Even a two-hour shopping spree in a brightly lit indoor mall is equivalent to spending about an hour in the sun, because fluorescent light bulbs also emit UV rays.
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