标签：oxygen 相关文章

Alien Neighbors 寻访外星人 5

Understanding how life got going on our own planet will help us target where we look for it in space, both within the solar system and beyond. Biophysicist, David Deamer, studies tide pools. A tide po

发表于:2018-12-07 / 阅读(76) / 评论(0) 分类 寻访外星人

AGRICULTURE REPORT - Composting

AGRICULTURE REPORT -January 8, 2002: Composting By Gary Garriott This is the VOA Special English AGRICULTURE REPORT. Many farmers around the world are composting to improve their soil so they can prod

发表于:2018-12-07 / 阅读(47) / 评论(0) 分类 农业与发展

Alien Neighbors 寻访外星人 14

发表于:2019-01-02 / 阅读(150) / 评论(0) 分类 寻访外星人

EXPLORATIONS - Spacesuit History

EXPLORATIONS -April 3, 2002: Spacesuit History By Paul Thompson VOICE ONE: This is Mary Tillotson. VOICE TWO: And this is Steve Ember with the VOA Special English program EXPLORATIONS. Today we tell a

发表于:2019-01-04 / 阅读(95) / 评论(0) 分类 Explorations

新标准小学英语活动用书第二册 17

[00:00.00]Module 6 [00:03.40]Unit 3 It's tall. [00:08.75]Activity 1 [00:12.09]Listen and point. [00:19.36]It's tall. [00:24.01]It's fat. [00:28.37]It's long. [00:33.20]It's thin. [00:38.27]It's big. [00:43.62]Activity book Module 6 [00:54.67]Unit 3 [

发表于:2019-01-09 / 阅读(141) / 评论(0) 分类 新标准小学英语活动用书第2册(一年级起点)

高中英语第一册课本(上)U07intergrating skills

Dear Editor, I live in Paris,France.In my country there is a famous site,called the Chauvet Caves.I am very worried about it because some of the cave paintings have been destroyed by air pollution.No,the pollution does not come from cars or factories

发表于:2019-01-09 / 阅读(135) / 评论(0) 分类 高中英语听力人教版第一册

VOA慢速英语2010年-EXPLORATIONS - Blue Holes: Some of the

BARBARA KLEIN: Im Barbara Klein. STEVE EMBER: And Im Steve Ember with EXPLORATIONS in VOA Special English. A blue hole is a flooded sea cave with a hole that opens up at the lands surface. These cave systems form in carbonate rock, often on islands.

发表于:2019-01-12 / 阅读(106) / 评论(0) 分类 2010年VOA慢速英语(十一)月

古代地球含有更多氧气，超过科学家预料

Ancient Earth Had More Oxygen than Scientists Thought 古代地球含有更多氧气，超过科学家预料 Researchers say the Earth had much more oxygen nearly a billion years ago than scientific experts thought. That claim could change theories a

发表于:2019-01-12 / 阅读(60) / 评论(0) 分类 2016年VOA慢速英语(八)月

历史上的今天-Today in History 2011-04-13

April.13th, 1970 - Apollo XIII is crippled on its way to the moon when a tank containing liquid oxygen bursts in its command module. The 3 astronauts on board are forced to return to Earth relying on their lunar module as a lifeboat in space. 1743 -

发表于:2019-01-19 / 阅读(59) / 评论(0) 分类 历史上的今天-2011年

历史上的今天-Today in History 2013-04-13

April.13th, 1970. Apollo XIII is crippled on its way to the moon when a tank containing liquid oxygen bursts in its command module. The 3 astronauts on board are forced to return to Earth relying on their lunar module as a lifeboat in space. 1743. Th

发表于:2019-01-19 / 阅读(51) / 评论(0) 分类 历史上的今天-2013年

历史上的今天-Today in History 2014-04-13

April.13th, 1970. Apollo XIII is crippled on its way to the moon when a tank containing liquid oxygen bursts in its command module. The 3 astronauts on board are forced to return to Earth relying on their lunar module as a lifeboat in space. 1743. Th

发表于:2019-01-19 / 阅读(50) / 评论(0) 分类 历史上的今天-2014年

历史上的今天-Today in History 2015-04-13

April.13th, 1970. Apollo XIII is crippled on its way to the moon when a tank containing liquid oxygen bursts in its command module. The 3 astronauts on board are forced to return to Earth relying on their lunar module as a lifeboat in space. 1743. Th

发表于:2019-01-19 / 阅读(49) / 评论(0) 分类 历史上的今天-2015年

英语听力：自然百科 海洋“死亡地带”

Oceanographer Jack Barth has had plenty of bumpy rides off the Oregon coast, launching and retrieving these underwater gliders. From April to October, they gathered data to help answer questions about the hell of the world's oceans. Alright, buddy, w

发表于:2019-01-22 / 阅读(79) / 评论(0) 分类 自然百科2010年

英语听力：探索发现 科学新发现：我们的大气层-9

We were left with this atmosphere made of molten rock and vaporous rock. It took millions of years for that atmosphere to fall out and to be replaced by an atmosphere made up of nitrogen and carbon dioxide and water vapour. These new gases came from

发表于:2019-01-23 / 阅读(64) / 评论(0) 分类 探索与发现2014年

AGRICULTURE REPORT - Compost: an Organic Way to Better Soil

AGRICULTURE REPORT - Compost: an Organic Way to Better Soil and Crops By Gary Garriott Broadcast: Tuesday, July 05, 2005 I'm Gwen Outen with the VOA Special English Agriculture Report. Many farmers im

发表于:2019-01-30 / 阅读(151) / 评论(0) 分类 农业与发展

音乐咖啡厅:Bethel Music - Starlight (Live)

You're like starlight in the dark Endless miles can't conceal you And every glimmer is a spark Catching fire as you break through Oh You're not far away You're coming close And oh Even as I wait You're coming close You're like summer in the night The

发表于:2019-02-13 / 阅读(95) / 评论(0) 分类 音乐咖啡厅

英语俚语天天说 第220期:口罩和空气净化器英文怎么讲?

介绍: smog 雾霾 mask 口罩、面膜 A mask is an object normally worn on the face, typically for protection, disguise（伪装）, performance, or entertainment. gas mask 防毒面 oxygen mask 氧气面罩 air purifier /?pj?r?fa??r/ 空气净化器

发表于:2019-02-13 / 阅读(49) / 评论(0) 分类 英语俚语天天说

梦想经不起等待-世界需要你(2)

dreams should not, and cannot wait 梦想经不起等待，也不能等待 The world is waiting on your gift 世界需要你 I know this may be hard to believe, but the world is waiting on YOU! Yes, YOU! You were born into the world with a unique gif

发表于:2019-02-16 / 阅读(55) / 评论(0) 分类 英语听力广播—Listening

万物简史 第423期:生命的起源(17)

Anniversaries were few and far between in the Archaean world. 在太古代的世界里，结婚周年纪念日是完全没有的。 For two billion years bacterial organisms were the only forms of life. 在20亿年时间里，细菌是惟一的生命形

发表于:2019-02-17 / 阅读(78) / 评论(0) 分类 万物简史

双语有声阅读：氢与工业

Hydrogen and Industries Hydrogen,the lightest and simplest of the elements, has several properties that make it valuable for many industries. It releases more heat per unit of weight than any other fuel.In rocket engines, tons of hydrogen and oxygen

发表于:2019-02-17 / 阅读(52) / 评论(0) 分类 双语有声阅读
最新学习文章
热门学习文章