标签：oxygen 相关文章

The Worst Christmas Jobs 圣诞特辑 8

Well, that's limelight. What exactly was it? Well it was the burning of calcium oxide in a very intense flame. And when did the job of a limelighter begin? Oh, famously, the first recorded instance in

发表于:2018-12-07 / 阅读(71) / 评论(0) 分类 圣诞特辑

Composting

By Gary Garriott Broadcast: July 22, 2003 This is Robert Covent with the VOA Special English Agriculture Report. Many farmers around the world are 1)composting to improve their soil so they can produc

发表于:2018-12-07 / 阅读(85) / 评论(0) 分类 VOA2003（下）-农业与经济

新标准初中英语第二册--Revision module A Listening

[00:00.00]Revision module A Listening [00:03.63]14 Listen and check () what Lingling and Tony are going to do. [00:52.74]15 Listen again and say when they are going to do these things. [01:41.50]Words and expressionsRevision module A [01:46.12]think

发表于:2018-12-13 / 阅读(81) / 评论(0) 分类 新标准初中英语第二册

SSS 2008-06-23

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? On June 4th we told you about iron snowflakes on Mercury. Today we have some radical news about the atmosphere of Venus. Literally, a radical is a molecule that reacts e

发表于:2018-12-24 / 阅读(69) / 评论(0) 分类 Scientific American(六)月

SSS 2011-01-25

This is Scientific Americans 60-Second Science. Im Cynthia Graber. This will just take a minute. The Chesapeake Bay could get helped by a new antipollution expert: farmed oysters. For decades, the Chesapeake has been plagued by excess nutrients, such

发表于:2018-12-24 / 阅读(66) / 评论(0) 分类 Scientific American(一)月

SSS 2009-04-13

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. The Earths original atmosphere would have been unpleasantdeadly in factto any organisms that breathe oxygen. There wasnt any. Not until about 2.4 billi

发表于:2018-12-24 / 阅读(70) / 评论(0) 分类 Scientific American(四)月

CNN 2008-02-26

Good afternoon, I'm Naamua Delaney at the CNN Center in Atlanta. Here is a look at what's happening NOW IN THE NEWS. We begin with the sentencing phase for a former Ohio cop convicted of double murder. Earlier this month, the jury found Bobby Cutts

发表于:2018-12-30 / 阅读(54) / 评论(0) 分类 商业报道2008年(二)月

SSS 2008-08-01

This is Scientific Americans 60-Second Science. I am Cynthia Graber. This will just take a minute. Solar panels typically convert sunlight into electricity or heat. But photosynthetic vegetation converts sunlight into chemical energy. Now M.I.T.s Dan

发表于:2019-01-04 / 阅读(100) / 评论(0) 分类 Scientific American(八)月

SSS 2010-04-14

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

发表于:2019-01-08 / 阅读(96) / 评论(0) 分类 Scientific American(四)月

SSS 2011-10-11

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. It sounds either really crazy, or kind of obvious. But according to new research, pick-up soccer could help homeless men avert the risk of an early dea

发表于:2019-01-08 / 阅读(78) / 评论(0) 分类 Scientific American(十)月

与美国小学生一起学英文第5册 第2期:火星

Mars 火星 Mars is a planet. 火星是行星。 It is next to the Earth. 它紧邻地球。 Its size is about one fourth of the Earth. 它约有四分之一个地球大。 Mars is not far from the Earth, but the environment is very different. 火星离

发表于:2019-01-10 / 阅读(56) / 评论(0) 分类 与美国小学生一起学英文第5册

浮游生物比科学家认为的重要的多

Plankton More Important than Scientists Thought 浮游生物比科学家认为的重要的多 For years, most people thought of small organisms called plankton as food for whales and other large sea animals. But a four-year long study discovered that

发表于:2019-01-12 / 阅读(66) / 评论(0) 分类 2015年VOA慢速英语(六)月

经济学人294:寒武纪大爆发 动物王国出现

Science and technology 科学技术 The Cambrian explosion 寒武纪大爆发 Kingdom come 动物王国出现 Chinese palaeontologists hope to explain the rise of the animals 中国古生物学家希望解释动物的起源 AMONG the mysteries of evo

发表于:2019-01-16 / 阅读(56) / 评论(0) 分类 经济学人科技系列

德国开辟生物制氢研究新途径

BERLIN, April 25 (Xinhua) -- A study recently published in the journal Nature Chemical Biology opens up new avenues in biohydrogen research, the Technical University of Berlin (TU Berlin) said on Friday. Scientists at the TU Berlin succeeded in expla

发表于:2019-01-26 / 阅读(60) / 评论(0) 分类 英语新闻

APOLLO THIRTEEN

32 阿波罗登月计划(二) DATE=4-18-01 TITLE=EXPLORATIONS #1948 - PROJECT APOLLO (PART TWO): APOLLO THIRTEEN BYLINE=MARILYN RICE CHRISTIANO ANNCR: Explorations --- a program in special English by

发表于:2019-01-30 / 阅读(137) / 评论(0) 分类 科技之光

有助于更好睡眠的花草

Raise your hand if you take your bedtime routine seriously. You're the one whose bedside table is covered in night creams, the one who puts on fuzzy socks to ensure those eight hours of shuteye is nothing short of pure bliss. 如果你认真对待作息

发表于:2019-02-01 / 阅读(52) / 评论(0) 分类 趣味英语

Preparations Continue for Thursday Shuttle Launch

The U.S. space agency is moving ahead with preparations for Thursday's scheduled launch of the space shuttle(航天飞机) Discovery on its mission to the International Space Station. NASA said it was loading liquid oxygen and liquid hydrogen into th

发表于:2019-02-02 / 阅读(86) / 评论(0) 分类 英语新闻

跟着Gwen学英语之每日早读 第239期

Everybody fights every now and then, especially best friends. But you got to make up fast. 语音讲解 单词发音 got to=gotta especially adv.特别；尤其；格外 连词发音 now and then make up fast 轻读重读 重读：fights/especially/m

发表于:2019-02-13 / 阅读(70) / 评论(0) 分类 跟着Gwen学英语之每日早读

生活中12个和味蕾有关的词语 你都知道吗？

小编导读：酸甜苦辣的说的是味道，也是人生百态。味道背后的故事你都知道吗? 1. EAGER 1、热切 The word eager goes back to the French word aigre, meaning sour. In English, it first took on the sense of sharp, biting, o

发表于:2019-02-17 / 阅读(75) / 评论(0) 分类 英文语法词汇

热门单词：“氧吧公交站”用英文怎么说？

一台类似于公交站的城市空气净化装置，近日正式落户于清华大学，其将作为清华校车车站之一，接受北京空气的测试。 请看相关报道： An outdoor air purification system, an oxygen bar designed in the fo

发表于:2019-02-25 / 阅读(141) / 评论(0) 分类 英文语法词汇
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