单词：niobiums
音标：[naɪ'əʊbɪəm] ；
n. [化学] 铌（41号元素，符号Nb）
单词：niobiums 相关文章
Presidential Candidate Says a Rare Metal Important to Brazils Future Public opinion studies suggest that Brazilian presidential candidate Jair Bolsonaro is likely to win Sundays election. The candidate believes he knows of a resource that may help hi
发表于:2018-12-16 / 阅读(203) / 评论(0)
2018年VOA慢速英语(十)月
2018年VOA慢速英语(十)月