标签：zinc 相关文章
[00:00.00]UNIT3 [00:15.09]Gardening [00:17.29]One of the quiet joys [00:18.71]of life in the southern part [00:20.57]of Ontario, Canada, is gardening. [00:23.31]Whether pursued as a hobby [00:25.71]or solely to improve [00:27.25]the esthetic value of
最新15篇文章贯通英语六级词汇
图片1 metal n. 金属 例句：This metal is harder than that one. 这种金属比那种硬。 metallic adj. 金属(性)的 例句：Fannie' s shovel struck against something metallic when she wasplanting flowers in the garden. 当芬妮在花园里种
漫画搞定六级词汇（文本+音频）
The firm Ennead clad the Utah Natural History Museum in Salt Lake City in copper and zinc, Ennead公司用铜和锌包裹了位于盐湖城的犹他自然历史博物馆， ores that have been mined in the area for 150 years and that also camouflage
TED演讲设计篇
Scientists have found living organisms trapped in crystals that could be 50,000 years old. The organisms were found in a hot, but beautiful cave system in Naica, Mexico. These ancient life forms can be seen only with a microscope. They are dormant, w
2017年VOA慢速英语(二)月
North Korea's nuclear weapons and missile program is today one of the most serious threats not only to the Asia-Pacific region, but to the world as a whole. So far this year, North Korea has test-fired at least nine ballistic missiles. It has threate
VOA标准英语2017年(6月)
One main goal in the renewable energy field is to find an efficient, inexpensive way to split water into hydrogen and oxygen. The hydrogen could then be used as a fuel source for vehicles or fuel cells. Typically, an electric current breaks the water
60秒科学
Study: Planet-Warming Gasses Make Food Less Nutritious A new study shows that rising levels of planet-warming gases may reduce important nutrients in food crops. 一项新的研究表明，温室气体可能会减少粮食作物中的重要营养物质
2018年VOA慢速英语(六)月
Broadcast: Apr 02, 2003 The investigation into what caused the break-up of the U.S. space shuttle Columbia supports the theory that a left wing panel broke off during its mission, possibly playing a r
VOA2003（上）-科技先知
Findings Could Help Slash Child Malnutrition Child malnutrition is a global problem. It exists even in rich countries. It affects a large number of children in Asia, especially in south Asia. In parts of the world, such as sub-Saharan Africa, it thre
VOA标准英语2013年(七月)
> 29 大城市对周围农村农作物生长的影响 DATE=5-29-01 TITLE=AGRICULTURE REPORT - Pollution and Crops BYLINE=Jill Moss （Start at 59
自然探索
DEVELOPMENT REPORT – April 15, 2002: Vitamin-Enriched Drinks By Jill Moss This is the VOA Special English Development Report. The Coca-Cola Company is developing a new healthy drink for people in de
农业与发展
DEVELOPMENT REPORT - Iron Sprinkles Seen as a Way to Aid Children's Health in Developing Countries By Cynthia Kirk Broadcast: Monday, June 06, 2005 I'm Gwen Outen with the VOA Special English Developm
农业与发展
Successful businesses adopt the philosophy that the customer is always right and McDonald's, famous for serving hamburgers, hasn't ignored that. So much so that it is opening, next year, its first totally vegetarian restaurant in India. About 40% of
英语听力精选进阶版
Electricity! I exclaimed in some surprise. 电！我惊异得叫起来。 Yes, sir. 是的，先生。 But, captain, you have a tremendous speed of movement that doesn't square with the strength of electricity. 但是，船长，您这只船移动的速
《海底两万里》中英双语有声读物
First off, I'll mention that at the bottom of the sea there exist veins of zinc, iron, silver, and gold whose mining would quite certainly be feasible. 首先，我对您说，海底有锌、铁、银、金等矿藏，开发并不是不可能的事。
《海底两万里》中英双语有声读物
Sodium? 钠吗？ Yes, sir. Mixed with mercury, it forms an amalgam that takes the place of zinc in Bunsen cells. 是的，先生。钠跟汞混合，成为一种合金，代替本生电池中所需要的锌。 The mercury is never depleted. Only the
《海底两万里》中英双语有声读物
SCOTT SIMON, HOST: There are enormous implications in a report this week from a team of Hungarian scientists who say that dogs can understand words, not just the tone in which we may tell them, oh, good boy, good little girl. Scientists at Eotvos Lor
英语语言学习
Dubbed 'The Roof of the World, the Qinghai-Tibet Plateau encompasses Qiangtang. Qiangtang is China's largest nature reserve in Tibet. It's located in the northwestern part of the Autonomous Region, covering the foot-hills of the highest points on ear
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