离子键

ionic bonding的用法和样例：

例句

Aminoin chitosan and carboxy on the surface of fiber form strong ionic linkage.壳聚糖的氨基同纤维表面的羧基形成了牢固的离子键结合。
Crystals may be classified as either ionic or covalent by analogy with molecules.与分子的情况一样，晶体也可以分为离子键型和共价键型。

Not Your Everyday Pet!

Not Your Everyday Pet! Yes, it’s a 1)meerkat, exactly what you expect to find under a 2)duvet in North Hamptonshire. Sue: And Matthew’s an early riser, gets him (meerkat) up puts him in bed with m

发表于:2018-11-28 / 阅读(150) / 评论(0)

疯狂英语2004年

听电影学英语-阿童木（Astro Boy） 04

[00:03.89]Dad? 爸爸？ [00:05.69]Toby. 透比 [00:11.15]Whoa. Whoa. [00:14.07]Dad! 爸爸！ [00:15.90]Welcome back, Son. 欢迎回来，儿子 [00:18.12]Thank you, Elefun. I'm going to take it, him, home now. 谢谢你，茶水我现在就带它，

发表于:2018-11-30 / 阅读(159) / 评论(0)

听电影学英语-阿童木

听电影学英语-战争之王 17

[00:01.68]我是来给他的敌人提供武器的 I am here to supply his enemies. [00:08.11]我想这笔交易我已经无法完成了 I fear its a sale I shall never complete. [00:13.91]他杀了你一个亲人...你叔叔... He killed your blood..

发表于:2018-11-30 / 阅读(143) / 评论(0)

听电影学英语-战争之王

电影学口语 Lesson 31:[玩具总动员]A Real Buzz Lightyear?

剪辑自《Toy Story》1 玩具总动员 Woody: Listen, Light Snack, you stay away from Andy. He’s mine, and no one is taking him away from me. Buzz : What are you talking about? Where’s that bon

发表于:2018-12-10 / 阅读(105) / 评论(0)

电影学口语

VOA慢速英语2012 Education Report - Experts Suggest Ways to Help International Students Make Friends with American Students

Education Report - Experts Suggest Ways to Help International Students Make Friends with American Students This is the VOA Special English Education Report. Last week, we told how some international students have few friends in their host country whe

发表于:2018-12-16 / 阅读(73) / 评论(0)

2012年VOA慢速英语(九)月

新东方在线时时学英语 20070131

Part One 你听不懂的 In Indian file 一路纵队 Children are standing in Indian file waiting to get on the bus. Look! How lovely those ducks are, walking behind their mother in single file! Let/blow off steam 发泄感情，发脾气，松弛 Johnny lets off steam

发表于:2018-12-16 / 阅读(71) / 评论(0)

新东方语音语调视频讲解

每天三分钟学英语第31期:英文"太…了"怎么说？_实战英语口语 - 可可英语

Phil: Figured we'd do a little father-son bonding since your school trip was canceled. Luke: Oh. You can teach me the Dunphy tuck. Phil: I love your enthusiasm, Son but it's way too dangerous. One wrong move, and you're eating springs. Way too +adj. 太

发表于:2018-12-17 / 阅读(71) / 评论(0)

每天三分钟学英语

[单词解析速记].JV485.(Histrionic.and.Immaculate)

Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文，请发贴到听力原文收集区，您将会获得10到30积分的奖励! Thank you！

发表于:2018-12-30 / 阅读(94) / 评论(0)

单词解析速记

双语趣听精彩世界第160期:德国砖家说搅基有益男性健康

英国每日电讯:德国研究人员发现,对于男人来说经常出去和男性朋友聚会有助于促进其身体健康. 德国砖家说搅基有益男性健康 Telegraph: Researchers in Germany found it was good for a man's health to be allowe

发表于:2019-01-01 / 阅读(46) / 评论(0)

双语趣听精彩世界

美国国家公共电台 NPR Yawning May Promote Social Bonding Even Between Dogs And Humans

RACHEL MARTIN, HOST: So obviously, teens aren't the only ones yawning. It's something everyone does - humans but also bears, bats, guinea pigs, giraffes. Yawning is common animal behavior. Here's reporter Michelle Trudeau. And no matter how interesti

发表于:2019-01-17 / 阅读(75) / 评论(0)

2017年NPR美国国家公共电台5月

英语博客(A cup of English):044 Bionicles.

Beginners. Black, red, green, light blue, silver, orange, swords, lazers, helmets, shields, flying machines, underwater vehicles. The list could go on. What do these words refer to? Bionicles. They are a type of lego. You can buy them in boxes to put

发表于:2019-01-28 / 阅读(97) / 评论(0)

英语博客 A cup of English

成年人结交新朋友的办法

Research has found that adults today have fewer friends than they did in the 1980s, and that more people say they have no one to discuss important stuff with. 研究发现，相比于20世纪80年代，如今的成年人朋友更少，并且越来越多

发表于:2019-02-08 / 阅读(87) / 评论(0)

阅读空间

2015年CRI An Intellectual Quiz in English for Chinese Students

An intellectual quiz, which tests both contestants' English skills and their areas of knowledge, has recently been held in Beijing. Kenny Liu Daxing, who is from Zhuhai college of Beijing Institute of Technology, joined the quiz. I felt the most inte

发表于:2019-02-21 / 阅读(126) / 评论(0)

2015CRI中国国际广播电台

英语PK台第379期:骑马向深山,入蒙赏鹰猎

Track One To the far west of Mongolianear the borders with Kazakhstan, Russia 在蒙古的最西部靠近与哈萨克斯坦、俄罗斯的边界 That was the real focus of the tripthe main motivation for it 这是本次旅行的重点所在也是旅行

发表于:2019-02-23 / 阅读(72) / 评论(0)

英语PK台

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

5'-deoxy-5-fluorouridine

Abd ar-Rahman

allergic vasculitis syndrome

amphicribral bundle

Auzits

backward flow forming

building construction