单词:left-hand crankshaft
左式曲轴
单词:left-hand crankshaft 相关文章
Pills Offer New Hope in Fight Against Yaws Scientists have found that a medicine taken in pill form is just as effective in treating the neglected tropical disease yaws as the usual treatment, a shot of penicillin. The easier-to-use therapy raises ne
发表于:2019-01-13 / 阅读(56) / 评论(0)
VOA标准英语2012年(一月)