振动传递

Transmission

9) The number of violent acts on televisions in the past years __ has increased __ (increase) from about 19 to 27 per hour. (15A 2004 上 ) 10) Your mind _ will keep ___ (keep) up with your reading sp

发表于:2018-12-01 / 阅读(125) / 评论(0)

自考英语（一）78讲

SSS 2009-01-14

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. When we think about how to represent sound visually, most of us probably picture those volume-dependent sine waves. But thats not how John Stuart Reid

发表于:2019-01-08 / 阅读(57) / 评论(0)

Scientific American(一)月

2017年CRI China's major ultra-high voltage transmission lines in smooth operation

China has long depended on coal-burning power plants to fuel its explosive growth over the past three decades. As a result, air pollution has risen to alarming levels in central and eastern regions. Policymakers have been working hard to shift the co

发表于:2019-01-19 / 阅读(101) / 评论(0)

2017CRI中国国际广播电台

PBS高端访谈:关于南佛罗里达的寨卡恐慌

HARI SREENIVASAN: The U.S. Food and Drug Administration today asked blood centers in two in Florida counties to suspend blood donations until each unit can be screened for the Zika virus. This comes as state health officials investigate four non-trav

发表于:2019-01-27 / 阅读(50) / 评论(0)

PBS访谈健康系列

“世界艾滋病日”话抗艾滋

每年的12月1日是世界艾滋病日，今年中国的宣传主题是合力抗艾，共担责任，共享未来。请看相关报道： Six out of every 10,000 people in China may be infected with HIV/AIDS, according to official figures revealed

发表于:2019-02-11 / 阅读(32) / 评论(0)

英语口语

环球英语 — 92：Preventing HIV Transmission from...

Voice 1 Thank you for joining us for todays Spotlight program. Im Liz Waid. Voice 2 And Im Rebekah Schipper. Spotlight uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice

发表于:2019-02-14 / 阅读(65) / 评论(0)

环球英语 Spotlight

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

area radiation monitoring system

asset turnover ratio

attribute type