单词：carboanion
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单词：carboanion 相关文章
一个英语单词可分为三部分：前缀（prefix）词根（root）后缀（suffix）。位于词根前面的部分就是前缀。前缀，可以改变单词的意思。 carb-, carbo- 表示碳 carbon = carb + on n. 碳 carbohydrate = carbo + h
发表于:2018-12-19 / 阅读(313) / 评论(0)
英语PK台
英语PK台
Companionship of books A man may usually be known by the books he reads as well as by the company he keeps; for there is a companionship of books as well as of men; and one should always live in the best company, whether it be of books or of men. A
发表于:2018-12-31 / 阅读(386) / 评论(0)
英语名著名段背诵精华
英语名著名段背诵精华
Australia's bold plans for a carbon emissions trading scheme are under threat after the conservative opposition in Canberra hardened its stance against it. Critics of Prime Minister Kevin Rudd's proposal say it would cost jobs and provoke economic u
发表于:2019-01-11 / 阅读(265) / 评论(0)
VOA标准英语2009年(五月)
VOA标准英语2009年(五月)