These stones, also like uric acid stones, are red-brown in color and radiolucent under an X-ray.

这类结石也像尿酸结石一样，呈红棕色，X射线可透过。

There are also uric acid stones which are red-brown in color and radiolucent under an Xray, meaning that they're transparent to x-rays and don't show up very well.

另外还有呈红棕色的尿酸结石，在X光片上不显影，说明X射线可以穿过它们，不能很好地显影。