silurian
adj. 志留纪的；希留利亚纪的
n. （地质）志留纪；希留利亚纪
例句
The contact relationship between Silurian and Devonian is parallel unconformity.
泥盆系与志留系之间为平行不整合接触。
Porphyry mineralization, occurred in the Silurian Period, finally formed ore bodies.
晚期矿化发生于志留纪，使矿床最终形成。
Unless the upper part of Ningqiang Formation maybe belongs to Middle Silurian, the others belong to lower Silurian.
本区绝大部分地层为下志留统，只有宁强组上部可能为中志留统。
