单词：germanium photocell
锗光电池
单词：germanium photocell 相关文章
Knock, knock. Mr Matthews? What a surprise! Where're your parents? They didn't bring me. I took the bus. Actually they don't even know I'm here. I've brought you a germanium. Geranium. Didn't I say germanium? Yes, you did. In fact, germanium is a che
发表于:2019-01-02 / 阅读(150) / 评论(0)
听美剧学英语-《淘小子看世界》
听美剧学英语-《淘小子看世界》