collyrium的复数形式怎么拼写？

collyrium的音标：collyrium的英式发音音标为：[kə'lɪrɪəm]collyrium的美式发音音标为：[kə'lɪrɪrm]...

n.洗眼剂...

The said collyrium features its obvious curative effect and reduced toxic by effect.其特点是降低毒副作用、疗效显著,已通过省级科技成果鉴定....