单词：Tevcocin
氯霉素,左霉素,左旋氯霉素,氯胺苯醇
单词：Tevcocin 相关文章
By Phillip Wellman Dakar 14 October 2007 The United States Agency for International Development and the U.S.-based World Cocoa Foundation have agreed to launch a multi-year partnership aimed at improving education and providing greater opportunities
发表于:2019-02-04 / 阅读(97) / 评论(0)
2007年VOA常速英语（十月）
2007年VOA常速英语（十月）
As an ass was quietly dining on thistles，he beheld a shepherd seated beneath a tree，awakening sweet echoes on his flute，and charming the ears of all within hearing，excepting our discontented lop-eared brute，who thus soliloquized：The world
发表于:2019-02-08 / 阅读(109) / 评论(0)
趣味英语
趣味英语