[化] 醛醇缩合; 醛缩作用

NPR 2009-11-27

President Obama is sending a Thanksgiving tribute to troops serving in war zones this holiday. The White House says Mr. Obama telephoned ten service men and women to thank them for their sacrifices. Within days, the President is expected to announce

发表于:2018-12-02 / 阅读(210) / 评论(0)

2009年NPR美国国家公共电台11月

SSS 2009-12-24

The northeast just had its first big snow of the season. Meanwhile, on Titan, it was foggy. That weather report brought to you by researchers publishing in the journal Astrophysical Journal Letters. The scientists found that Titan, Saturns largest mo

发表于:2018-12-02 / 阅读(193) / 评论(0)

Scientific American(十二)月

英语灵异故事-The Pub 01 酒吧 01

[00:13.67]THE PUB [00:18.89]酒吧 [00:30.54]I worked in my local pub and over the weekends [00:34.50]and some times during the week [00:36.88]I would stay over there with the other bar manager. [00:40.70]We shared a room. [00:42.51]It wasn't strange t

发表于:2018-12-11 / 阅读(175) / 评论(0)

英语灵异故事

英国学生科学读本第88期:冷凝(2)

Thus by heating liquids we cause them to evaporate, or change into vapours or gases; 因此, 可以看出：我们能够通过加热液体使得它们蒸发, 变成水蒸气或气体； and by taking away heat from these gases, or cooling them, we tu

发表于:2018-12-18 / 阅读(158) / 评论(0)

英国学生科学读本

英国学生科学读本第88期:冷凝(1)

Lesson 88 Condensation 第88课冷凝 When the water in a kettle boils, it boils first at the bottom. 当水壶中的水沸腾时, 首先开始沸腾的是底部的水。 We cannot see this in a kettle, because the kettle is made of iron. 我们无法

发表于:2018-12-18 / 阅读(208) / 评论(0)

英国学生科学读本

Sharjah Art Biennial

Amber: Hello, I'm Amber and you're listening to bbclearningenglish.com. In Entertainment today, we visit the largest art event in the Arab world - the Sharjah Art Biennial in the United Arab Emirates. (A biennial is an event that happens every 2 yea

发表于:2018-12-19 / 阅读(237) / 评论(0)

Entertainment

英文书摘精选 Cilantro:Love It Or Hate It?香菜:爱它还是恨它?

On todays Moment of Science, well be sniffing our way through a controversial culinary conundrum: the great cilantro debate. 今天的《科学一刻》栏目，我们将来探讨一个有争议性的烹饪难题：关于香菜的大辩论。 Accordi

发表于:2018-12-28 / 阅读(236) / 评论(0)

初学者听力文摘精选

【英语听和读】沙咖艺术展

Amber: Hello, Im Amber and youre listening to bbclearningenglish.com. In Entertainment today, we visit the largest art event in the Arab world - the Sharjah Art Biennial in the United Arab Emirates. (A biennial is an event that happens every 2 years.

发表于:2018-12-28 / 阅读(144) / 评论(0)

英语听和读

英语听力文摘 English Digest 627、香菜：爱他还是恨他？

Cilantro: Love It Or Hate It? On todays Moment of Science, well be sniffing our way through a controversial culinary conundrum: the great cilantro debate. According to scientists working at the Monell Chemical Senses Center, the smell of cilantro usu

发表于:2018-12-31 / 阅读(190) / 评论(0)

英语听力文摘 English Digest

生活大爆炸第二季第三集_1：The Barbarian Sublimation

-Sheldon：Fellow warriors, This is Sheldor the conqueror. Fellow：同伴 warrior：武士 conqueror：征服者【Sheldor：Sheldon在游戏中的人物名】战友们，我是征服者Sheldor。 We are about to enter Axidus' fortress. enter：进入

发表于:2019-01-01 / 阅读(157) / 评论(0)

生活大爆炸第二季

60秒科学:Fog Found on Saturn's Moon Titan

Fog Found on Saturn's Moon Titan A study in Astrophysical Journal Letters reveals that Titan may be home to the familiar atmospheric condition known as fog--but made out of methane. Karen Hopkin reports The northeast just had its first big snow of th

发表于:2019-01-02 / 阅读(179) / 评论(0)

60秒科学

英语PK台第764期:我其实不抽烟(你其实很虚伪)

About a girl who sits on a wall, and thinking about what happened. She just caught her boyfriend cheating with her best girl friend, and as she thinks about this the girl friend comes to her to talk. Funny and sad story at the same time, humoristic d

发表于:2019-01-18 / 阅读(139) / 评论(0)

英语PK台

英语听书《白鲸记》第142期

The chief mate of the Pequod was Starbuck, a native of Nantucket, and a Quaker by descent. 斯达巴克是裴廓德号上的大副。他是地道的南塔开特土著，一个桂克的后代 He was a long, earnest man, and though born on an icy coas

发表于:2019-01-29 / 阅读(128) / 评论(0)

白鲸记

科学揭秘"暴风雨前的宁静"

Have you ever spent an afternoon in the backyard, maybe grilling or enjoying a basketball game, when suddenly you notice that everything goes quiet? The air seems still and calmeven the birds stop singing and quickly return to their nests. 你可曾有

发表于:2019-02-01 / 阅读(142) / 评论(0)

阅读空间

迪拜又放大招酒店自带雨林

财大气粗的迪拜不仅拥有世界最高建筑哈利法塔、世界最大人工岛棕榈岛和最大的购物商场，还将打造全球第一家自带热带雨林的高科技奢华酒店。除了7000平米的热带雨林，这家希尔顿旗下的

发表于:2019-02-07 / 阅读(227) / 评论(0)

实用英语

10步清理你的办公室

Do you have the guts to part ways with all those broken gadgets, notepads and pens? This 10 step office cleanup guide should have you neat and tidy in no time. Try to spend just one minute on each task, and move quickly. 10. Paper Why its messy: Pape

发表于:2019-02-09 / 阅读(351) / 评论(0)

英语小短文

无法翻译的外语单词有哪些？

The relationship between words and their meaning is a fascinating one, and linguists have spent countless years deconstructing it, taking it apart letter by letter, and trying to figure out why there are so many feelings and ideas that we cannot even

发表于:2019-02-09 / 阅读(235) / 评论(0)

英语笔译

好听的英文歌曲：Headlock - Imogen Heap

（双人组合Frou Frou）Guy Sigsworth可是鼎鼎大名的音乐家、制作人，制作过Bjork、Jem、Griffiths、Lamb、Madonna、Seal等人的作品。 Distant flickering, Greener scenery, This weather's bringing it all back again. Great adve

发表于:2019-02-11 / 阅读(141) / 评论(0)

好听的英文歌曲

托福语法技巧:并列连词及真题解题要点

托福考试并列连词及真题解题要点：有关并列连词的命题在TOEEL考试中占有极重要的地位。并列连接词不仅自身是命题的焦点，它还涉及到一些其它的题型，如平行结构，词类、及一致等TOEEL考

发表于:2019-03-02 / 阅读(185) / 评论(0)

托福英语

英语听书《白鲸记》第342期

The chief mate of the Pequod was Starbuck, a native of Nantucket, and a Quaker by descent. 裴廓德号的大副叫斯达巴克,他是个南塔开特土著,也是个桂克的后代。 He was a long, earnest man, and though born on an icy coast, seeme

发表于:2019-03-10 / 阅读(228) / 评论(0)

白鲸记

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