un. 快速退火的可锻铸铁
[网络] 快速退火可锻铸铁

[00:06.79]magnetic magnetism magnify [00:15.02]adj.有磁性的,有吸引力的 n.磁性;吸引力 v.放大;赞美 [00:23.25]magniloquent magnitude magpie makeshift [00:33.87]adj.夸张的 n.重要;星球的光亮度 n.鹊,饶舌的人 n./adj.代用品

发表于:2018-12-04 / 阅读(357) / 评论(0) 分类 GRE词汇精选

Water Cycle 水循环 All the oceans on earth are salty, while inland water is typically fresh. How does water become salty? We'll answer a listener's question -- today on Earth and Sky. DB: This is Earth and Sky. We recently visited the Austin Childr

发表于:2018-12-07 / 阅读(246) / 评论(0) 分类 (科普英语)Earth and Sky

很多人都相信上帝是公平的,关上眼前的一扇窗会为你打开另一扇窗。在最新的科学研究中我们也能得到类似的结论:天生听力有缺陷的人会有更好的视觉。 Recent research explains how the deaf can

发表于:2018-12-07 / 阅读(226) / 评论(0) 分类 60秒科学

Every era has its defining struggle and the fate of Africa is one of ours. It's not the only one, but in the history books it's easily going to make the top five--what we did or what we did not do. It's a proving ground, as I said earlier, for the id

发表于:2018-12-30 / 阅读(175) / 评论(0) 分类 名人励志英语演讲

Fire Cycle 火灾规律 The El Nino phenomenon of 1997-98 unleashed torrential rain in some parts of the world, while creating abnormally dry conditions in others. And it sparked record numbers of wildfires. Learn more about climate and wildfire -- toda

发表于:2019-01-02 / 阅读(368) / 评论(0) 分类 (科普英语)Earth and Sky

This is Scientific Americans 60-Second Science. Im Christie Nicholson. Got a minute? Is it an old wives tale or can deaf people actually see better? Scientists have long thought that the structure of our brain is fixed. For instance, from birth the a

发表于:2019-01-08 / 阅读(265) / 评论(0) 分类 Scientific American(十)月

By Michael Bowman Washington 07 June 2007 Scientists in the United States say they have for the first time been able to create stem cells from the ordinary skin cells of mice, a breakthrough that could lead to new medical breakthroughs and eliminate

发表于:2019-01-11 / 阅读(265) / 评论(0) 分类 2007年VOA标准英语(六月)

In the four centuries since Romeo and Juliet was first performed, Shakespeare's tragic tale of star cross'd lovers has been recast into formats from high school comedy to musical theater. Now, at long last, we have the whimsical Disney version in a n

发表于:2019-01-14 / 阅读(190) / 评论(0) 分类 VOA标准英语2011年(二月)

Simulating Blindness Might Help Improve Hearing 模拟失明或有助于提高听力 A new report suggests it might be possible to change the circuitry of the brain to better process sound, a finding that could give renewed hope to the 350 million pe

发表于:2019-01-14 / 阅读(178) / 评论(0) 分类 VOA标准英语2014年(二月)

RACHEL MARTIN, HOST: A cartoon frog died on the Internet a few days ago. His name was Pepe. You might remember him over the course of the 2016 election. He became one of the most recognizable symbols of the alt-right. NPR's Sam Sanders tells us how P

发表于:2019-01-17 / 阅读(174) / 评论(0) 分类 2017年NPR美国国家公共电台5月

Copper can be rolled or hammered out into thin sheets, and so we say that it is malleable. It can also be easily drawn out into wire, and for this reason we call it ductile. Sheet copper is much used for covering the bottoms of ships, and for making

发表于:2019-01-17 / 阅读(192) / 评论(0) 分类 英国学生科学读本

Playing by His Own Set of Rules 以自己的游戏规则行事 When Andy Hertzfeld joined the Macintosh team, he got a briefing from Bud Tribble, 安迪赫茨菲尔德加入Mac团队后,另一名软件设计师巴德特里布尔 the other software

发表于:2019-01-22 / 阅读(223) / 评论(0) 分类 乔布斯传

The government said that work on the first seven cycle tracks which were promised earlier this year will start in the summer. This will cost $9 million. Another $41 million will be spent later. Together these cycle tracks will be called The Great Rid

发表于:2019-01-27 / 阅读(275) / 评论(0) 分类 新西兰英语

Ancient Iraqi Relics Find Their Way Home with Help from the FBI 在FBI的帮助下,伊克古文物重回家乡 As Operation Iraqi Freedom rolled through Baghdad in the spring of 2003, an estimated 1

发表于:2019-01-30 / 阅读(234) / 评论(0) 分类 VOA2005(上)--文化教育动态

By Melinda Smith Washington, DC 17 April 2006 watch Sinus Surgery report Many people who live in climates where there is a change of seasons often experience sinus problems. Sinus pain and headaches c

发表于:2019-01-31 / 阅读(318) / 评论(0) 分类 2006年VOA标准英语(四月)

By Victoria Cavaliere New York 16 October 2007 An annual stem cell research conference in New York has been bringing together some of the field's top scientists to discuss breakthroughs in stem cell research and what proponents call its long-term app

发表于:2019-01-31 / 阅读(234) / 评论(0) 分类 2007年VOA常速英语(十月)

还记得《美丽心灵的永恒阳光》里的约尔(金凯瑞饰)吗?情人节前夕,当约尔精心准备好礼物,为不久前一次争吵找到克莱门汀(凯特温丝莱特饰)道歉时,他惊讶地发现,克莱门汀根本都

发表于:2019-02-03 / 阅读(174) / 评论(0) 分类 阅读空间

Manhattan memory project: How 9/11 changed our brains You'll probably remember exactly where you were and what you were doing when you first learned that passenger jets had crashed into the World Trade Center. People tend to form exceptionally vivid

发表于:2019-02-04 / 阅读(225) / 评论(0) 分类 阅读空间

People who are furrowing their brows over weighty arithmetic puzzles or sweating over wordy text books might want to take note. 对超难度算术题皱眉头或对冗长的课本冒汗的人需要记笔记。 Adults can significantly bulk up their b

发表于:2019-02-06 / 阅读(153) / 评论(0) 分类 阅读空间

Classical music fans in Beijing are now embracing a massive work-the complete cycle of Beethoven's 9 symphonies with The Deutsche Kammerphilharmonie Bremen. Paavo Jarvi, an internationally famous Estonian conductor, is the artistic director of the or

发表于:2019-02-14 / 阅读(301) / 评论(0) 分类 2017CRI中国国际广播电台
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