音标：[sˌtrep'tævɪdɪn] ；

n. 链霉亲和素; 抗生蛋白链菌素

词型变化：名词复数形式 : streptavidins

儿童英语绘本：牛津阅读树ORT MP3下载 Phonics1 84 What a DIN

图片1 图片2 图片3 图片4

发表于:2018-12-10 / 阅读(218) / 评论(0)

牛津阅读树ORTMP3（1-11级）

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影片对白 MAJOR HALBERT: My lord, there is a rider at the gates. A civilian carrying a white flag. CORNWALLIS: I'm occupied . MAJOR HALBERT: He has a pair of dogs with him. Great Danes. CORNWALLIS: Now we come to the matter of the specific targeting

发表于:2019-01-03 / 阅读(292) / 评论(0)

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影片对白 MARTIN: It's a good spot. Boys, listen to me. I'll fire first. I want you two to start with the officers and work your way down. Can you tell the differences? NATHAN SAMUEL: Yes, father. Yes, father. MARTIN: Good. Samuel, after your first s

发表于:2019-01-03 / 阅读(251) / 评论(0)

影视英语

VOA常速英语2008年-Asian Markets Remain Volatile in Limited Tradin

By Naomi Martig Hong Kong 20 March 2008 Stock markets in Asia remain jittery, with fears of a U.S. recession continuing to cause major market fluctuation. As Naomi Martig reports from Hong Kong, financial analysts say that this may be the beginning o

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Iranian President Mahmoud Ahmadinejad addressed thousands of flag-waving supporters at a victory rally to celebrate being officially proclaimed winner of Friday's election, despite widespread accusations of fraud. Supporters of Iranian President Mah

发表于:2019-01-13 / 阅读(252) / 评论(0)

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An international team of researchers looking for the cause of severe bacterial epidemics has deciphered the genome of group A streptococcus, a normally harmless sore throat pathogen that occasionally turns deadly. Experts say the breakthrough could s

发表于:2019-01-13 / 阅读(276) / 评论(0)

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Eztalk美语【193】sick of being sick 受够了生病

Three days later Lily:Mom, I'm ready for school. Mom:Let me feel your forehead. I'm so glad it wasn't strep throat. Lily:I don't have a fever, and I'm ready for my test. Mom:But I'm not sure you're strong enough yet. Here's some seafood rice soup I m

发表于:2019-01-21 / 阅读(253) / 评论(0)

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dinks sandwich generation 我们上次给大家介绍了baby boomers和yuppies。这是两个反映美国社会变化的习惯用语。今天我们再给大家讲两个这方面的俗语。在第二次

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Rikki-tikki-tavi part 2. Who is Nag? I am Nag. My family has ruled this garden for thousands of years. Look at me and be afraid. Rikki-tikki was scared for only a minute. He knew that as a mongoose, he was supposed to fight snakes. Nag knew it too. L

发表于:2019-01-28 / 阅读(206) / 评论(0)

英语博客 A cup of English

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This tale is of a brave mongoose, named Rikki-tikki-tavi, and his great fight to help a family that saved him. It all took place in the far-off land of India. It began on the first sunny day after many days of darkenss and rain. A young English boy,

发表于:2019-01-28 / 阅读(173) / 评论(0)

英语博客 A cup of English

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Rikki-tikki-tavi part 3. Oh no, exclaimed Darzee so the snake could hear, my wing is broken and I can't fly. The bird just needed to get the snake away from her eggs. The bird fluttered down the garden path and Nagaina followed closely. Rikki-tikki r

发表于:2019-01-28 / 阅读(195) / 评论(0)

英语博客 A cup of English

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The Edinburgh International Festival is over fifty years old and has earned its reputation as one of the world's greatest celebrations of the arts. The founders of the Festival believed that the Festival programmes should be of the highest possible a

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音乐咖啡厅:One Step At A Time-Jordin Sparks

Jordin Sparks在她会说话之前, Jordin 的歌声就频频出现在电视和广播里, 三岁的时候就在她妈妈的磁带里清脆放音. 在小学时她用厨房当排练室，站在橱柜上练声，初中时在教堂唱诗班唱歌, 并乐此不疲。 2006年九月，她陆续赢得了亚利桑那偶像，西雅图偶像，接着在那里获得

发表于:2019-02-02 / 阅读(287) / 评论(0)

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Transcript: Presenter: Next on the programme we have an interview with someone who has been writing a book about high-achieving teenagers. Welcome, Louise Hardy. Louise: Hi, its lovely to be here. Presenter: Louise, many of these teenagers who have a

发表于:2019-02-27 / 阅读(301) / 评论(0)

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actinothrysin

aircraft deployment problem

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