犬尿氨酸羟化酶

SSS 2008-06-23

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? On June 4th we told you about iron snowflakes on Mercury. Today we have some radical news about the atmosphere of Venus. Literally, a radical is a molecule that reacts e

发表于:2018-12-24 / 阅读(48) / 评论(0)

Scientific American(六)月

100个儿童英语小故事: Benu and Glenu Benu和Glenu

056 Benu and Glenu There were two islands called Benu and Glenu around Holstein Castle located next to the Zeeland coast. On these two islands, there were forests, ranches, fields, churches and towns. These two islands were located close to each othe

发表于:2018-12-31 / 阅读(235) / 评论(0)

100个儿童英语小故事

专业术语—SARS专业词汇（二）

Erythromycin,红霉素 Azithromycin,阿奇霉素 Clarithromycin,克拉霉素 Fluoroquinolones and their derivatives （e.g. levofloxacin）,多西环素（如：脱氧土霉素） Tetracyclines （e.g

发表于:2019-01-03 / 阅读(41) / 评论(0)

医务英语

麻省理工学院公开课：单变量微积分03：求导四则运算及三角函数导数

分集介绍：导数，商数，正弦和余弦 Derivatives.of.products.quotients.sine.cosine

发表于:2019-01-05 / 阅读(285) / 评论(0)

麻省理工学院公开课：单变量微积分

2005年NPR美国国家公共电台三月-Time Warner to Pay $300 Million on Revenu

Media giant Time Warner will pay a three-hundred-million-dollar penalty to the Securities and Exchange Commission. The civil penalty is to settle charges the company overstated revenues earned by its online division AOL. NPR's Jack Spear reports. The

发表于:2019-01-08 / 阅读(195) / 评论(0)

2005年NPR美国国家公共电台

voa标准英语2008-ZANU-PF Prepares for Annual Conference as Choler

Harare's streets are busy as hundreds of delegates to President Robert Mugabe's annual ZANU-PF conference converge from all over the country. The annual conference is being held as the death toll continues to climb from a cholera epidemic that has f

发表于:2019-01-13 / 阅读(69) / 评论(0)

VOA标准英语2008年(十二月)

最新学习文章

热门学习文章

热门标签

英语听力 VOA标准英语 VOA 英语歌曲口语听力提高听力材料听力教程英语学习 NPR 英语口语 VOA慢速英语美国国家电台儿童英语 VOA英语小学英语 cnn VOA常速英语标准英语英文歌曲听电影学英语英语单词英文电影慢速英语 CRI 美联社新闻美国有线新闻加州分级澳洲新闻流行歌曲常速英语 ABC新闻快递疯狂英语英语读物听力棚车少年经济学人英语词汇商务英语 VOA双语新闻 BBC 中国电台大学英语 Treasures 加州语文 BBC英语英语听力网站 VOA英语教学词汇万花筒 SSS VOA英语听力 AP 新概念分级英语英语广播听力精选英语播客英文绘本 TED演讲赖世雄英语MP3 CCTV9英语新闻 lesson 英语新闻初中英语学英语英语语法历史上的今天英文广播剧英语游戏原版英语小说英语有声读物书虫英语牛津英语读物访谈录新闻一分钟考研英语英语每日在线听新闻 Us 新概念英语地道英语单词第二册自然百科高中英语 sports 实用英语 MP3听力辛沛沛 ESL英语第一册英语每日一句 unit 新东方 GRE 每日一词 BBC听力

学英语单词

blanking the amplifier