单词：precursor gas
单词：precursor gas 相关文章
[00:14.15]Roofer [00:19.31]房顶工人 [00:31.61]I worked in the basement of a Caltech campus building [00:35.17]that had been periodically haunted [00:37.88]by the specter of the upper half of a roofer [00:41.07]who had fallen from the six story roof [
英语灵异故事
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单词解析速记
Want to ward off memory issues and other cognitive problems as you age? Looks like low blood glucose levels are an important factor. New research finds that individuals diagnosed with type 2 diabetes in middle age had greater cognitive impairment in
英伦广角
A little old lady goes to the doctor ... and says,
英文笑话
Broadcast: Feb 13, 2003 Demand for electricity is growing in Mexico, but the state-owned oil company, known as Pemex, is reducing the amount of natural gas it can provide for electrical generation. Th
VOA2003（上）-国际时讯
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Weve heard that a mothers weight during pregnancy can influence the weight of her offspring. Now a study of rats shows that the fat content in a moms d
Scientific American(十一)月
This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Aspirin is a popular painkiller, and chances are you have some in your medicine chest right now. You might even have some in your flesh-and-blood, put-a-
Scientific American(一)月
AS IT IS 2016-08-26 US Space Agency Prepares for Asteroid Meet-up 美国航天局为小行星会面做准备 American researchers are making final plans to send a spacecraft into space for a possible meeting with an asteroid. 美国研究人员正在做
2016年VOA慢速英语(八)月
By Deborah Block Washington 13 May 2008 As the price of gasoline continues to rise in the U.S., more Americans are buying smaller, more fuel-efficient vehicles. Others are holding on to their big cars, in hopes that gas prices will eventually go down
VOA标准英语2008年（五月）
With thirteen days to go to the London Olympics, Olympic fever has returned once again to China. And a special art exhibition in Beijing is highlighting the passion of Chinese artists for all things sporting. Its called The Thames River, the Great Wa
英语新闻视频
Science and Technology LSD Acid tests 科技 麦角酸二乙基酰胺 迷幻药之考验 Research into hallucinogenic drugs begins to shake off decades of taboo 迷幻药物的研究开始摆脱几十年来的禁忌 THE psychedelic era of the 1960s i
经济学人科技系列
Do you have gas? Beginners. What kind of a question is that? Are you talking about my body or my car? Well, actually, I am talking about your car. Gas, or petrol, as it is called in England, is a big subject at the moment. Driving a car has become re
英语博客 A cup of English
-Stephanie：Does he always do this? 他经常这么干吗？ -Leonard：Sometimes he brings a toy xylophone. toy：玩具 xylophone：木琴 有时他还会自带玩具木琴。 I am really sorry about this. 我对这一切很抱歉。 -Stephanie：
生活大爆炸第二季
By Robert Berger Jerusalem 02 April 2008 Israel is strengthening security on its home front in a sign of war jitters. As Robert Berger reports from VOA's Jerusalem bureau, Israel is casting a wary eye toward Iran. Israel's security Cabinet has decide
VOA常速英语2008年（四月）
KHARTOUM, Jan. 5 (Xinhua) -- Chairman of the U.S. Senate Foreign Relations Committee John Kerry on Wednesday said that a successful referendum(公民投票权) in south Sudan would be the precursor（先驱,前导） to a stronger new relationship be
英语新闻
THE HAGUE, Dec. 23 (Xinhua) -- PSV Eindhoven ended the year 2012 as Dutch Eredivisie winter champions for the 19th time in history, with FC Twente finishing the year on goal difference as the second placed team. PSV had no difficulties with NAC Breda
英语新闻
LOS ANGELES, Jan. 2 (Xinhua) -- The producers of the award season's frontrunners including Lincoln, Zero Dark Thirty and Les Miserables have been chosen as possible contenders for the top honor bestowed by the Producers Guild of America (PGA), the gr
英语新闻
LOS ANGELES, Jan. 8 (Xinhua) -- The Directors Guild of America (DG) on Tuesday handed out nominations to elite directors including Steven Spielberg and Ang Lee who are viewed as front- running contenders for best helmer of 2012. Ben Affleck earned a
英语新闻
Europe 欧洲 Energy in Ireland: Bog down, wind up 爱尔兰能源：停顿，关闭 Ireland is ditching peat for energy from wind. 爱尔兰正从泥炭能源转向风能。 Peat has a lot to recommend it. 这个岛国的目标是成为电力净出口
经济学人综合