refractory用法_例句
refractory 朗读
refractory
音标：rɪ'fræktəri
refractory翻译
refractory双语用法和例句
相关单词
radiochromatogram racecourse roquette recklinghausen ratal readjust resumption readvance rockman russianize ramallah roentgenometry rigger rosiness robertsonian reflexible running radiolarian regionalist respectability