Eventually, she and her colleagues worked out that the dragonfish reflects just one in every 2,000 photons incident upon it-an absorbance of 99.95%.

最终，她和她的同事发现深海龙鱼仅反射入射到其表面的1/2000的光—吸光度为99.95%。

So contrasting the absorbance of red to infrared light provides a chemical fingerprint to eliminate the blood vessel size effect.

因此，对比红光与红外光的吸光度可提供化学指纹图谱，以消除血管尺寸效应。