Recycling of that heme group yields unconjugated bilirubin, which at high concentration can cause scleral icterus, jaundice, and bilirubin gall stones.

亚铁血红素的循环产生非结合胆红素，其浓度过高导致巩膜黄染、黄疸与胆红素胆结石。

The researchers also found that Shuvuuia had a very wide scleral ring -- tiny bones that circle the eyeball.

研究人员还发现鸟面龙有非常宽的巩膜环——环绕眼的微小骨骼。

In 2010, a group of researchers looked at a sample of eye bones, called scleral rings.

2010年，一组研究人员研究了一组被称为巩膜环的眼骨样本。

And along with the scleral rings, researchers have unearthed more fossil evidence that dinosaurs weren't entirely limited to daytime hours.

而且，除了巩膜环，研究人员还发现了更多化石证据，表明恐龙并非完全局限于白天活。

Now, some dinosaurs also had scleral rings, and when they applied that same approach to 23 dinosaur fossils in 2011, the researchers found that plenty of them were most likely active at night—including hunters like Velociraptor.

现在，一些恐龙也具有巩膜环，研究人员在2011年对23具恐龙化石应相同方法时发现， 其中很多很可能在夜间活， 包括像迅猛龙这样的猎食者。