标签：地球观测卫星 相关文章
安全行走地球 需要排雷行动 Once the fighting ends, peace treaties are signed, and armies are disbanded, we assume that life in former conflict areas will soon return to normal. But that's hardly the end of the story. Too often, former batt
VOA标准英语2016年(十二月)
The Earth's Biggest Threat 地球危机──温室效应 by Levi King Global warming was once considered unlikely to be real. Recently, though, it has become widely accepted as fact. Scientists have calculated that the earth's atmosphere has gotten
常春藤解析英语
Bobby and Sam are doing a project. 波比和萨姆在进行一个项目。 The Earth is our home. 地球是我们的家园。 We should protect it. 我们应该保护它。 All students should know this. 所有的同学都应该知道这点。 Let's
江苏译林版牛津小学英语(3起)六年级上册
If you only do what you can do you'll never be more than you are now. 如果你只是做你力所能及的事，你将不会有所进步。 图片1
Daily English-2016.12
When will it be possible for us to think seriously about colonising Mars? The Moon is likely to become the industrial hub of the Solar System, supplying the rocket fuels fro its ships, easily obtainable from the lunar rocks in the from of liquid oxyg
新概念英语第四册单词MP3
Jupiter and Venus Squeeze Earth's Orbit The Sun exerts an enormous and obvious influence on the Earth, with its gravity and light. But other bodies also have a small say in our affairs. 太阳用其重力和光线对地球产生巨大而明显的影响
2018年科学美国人5月
《英语错不起》栏目收录了人们在日常生活中容易用错的英语口语表达，是纠正易错英语表达，学习正确的交际英语口语的好帮手。通过学习本栏目，英语学习爱好者可以掌握地道的英语口语
英语错不起
First of all let us consider the earth (that is to say, the world) as a planet revolving round the sun. The earth is one of mine planets which move in orbit round the sun. These nine planets, together with the sun, make up what is called our solar sy
双语有声阅读
斯图尔特伯兰特曾引领了上世纪六七十年代的环保运动，现在，他开始重新考虑关于城市，核能，转基因改造和人工气候改造（地球工程）的问题。这是他在美国国务院的一个演讲，讲述的是
TED公开课:环境 重造计划
Artist:Owl City Song:Strawberry Avalanche This is a world of dreams and reverie Where I felt the stars explode around me. A grasp light flashed with a gleam as it slashed open a moon beam And I stared back breathlessly as mountains of fruit tumbled o
英文最新流行歌曲
You Traveled Far Last Year Happy New Year! And if youve been away from work for a few days, you deserve some time off. After all, youve traveled far. Even if you just stayed at home. According to NASA, just by being on the planet Earth in the last ye
2018年科学美国人1月
能源和环境危机Fuel and Environment Crisis 人类一直利用地球上的资源来发展自身。环境因人的使用而改变，而人类并没有改变自己来适应环境。 Listen Read Learn Human beings have always used the resources of the Earth of their own development. The environment
英语口语大赢家
Don: It's time once again for one of those Moments of Science that we like to call Never Thought to Ask.Our never thought to ask question for the day is: Why is the earth round? Ya?l: Why is the earth round? I never thought to ask that. D: Of course
英语时差8，16
The earth turns on its axis every 24 hours-or so were taught. But, before we had pictures from space, how would we prove it to someone? The rising and setting of the sun and stars in the sky provide pretty strong evidence, but not absolute proof, sin
英语时差8，16
Rachel: So Steven, we've been talking about Costa Rica and how beautiful nature is there and how important it is to preserve it. What do you do in your life to save the environment or to protect the environment? Steven: It's almost daily that I think
英语趣味课堂
Futuristic Movie 'Elysium' Underscores Today's Ills 未来主义电影针砭时弊 South African filmmaker Neil Blomkamp returns with a new sci-fi film, Elysium. Like his previous futuristic drama District 9, Elysium tackles social separation in a dy
VOA常速英语2013年(八月)
说到环境，很多人都想做正确的事。但可持续性战略学家蕾拉阿卡罗格鲁说，比起选择纸袋来说，事情远复杂得多。蕾拉大胆地号召人们，不要再执迷于我们坚守的绿色谜题，而是拓展思维，
TED公开课:环境 重造计划
A new study says that a global agreement on climate change will come too late to save the majority of the world's coral reefs. The research comes as the Queensland state government announces a new multi-million dollar plan to protect the Great Barrie
VOA双语新闻 2008年10月
If you drop the ball, gravity will pull it toward the center of the earth, but will not diminish that extra eastward speed. So as the ball falls itll outrun the ground and land slightly east of the straight-down point. Edwin H. Hall, a Harvard Univer
英语时差8，16
When you haul something up by rope, you generally think of the object being lifted as the weight. Something we dont consider is that the rope has to be able to lift itself too. Lift itself!?! What does that mean? Think of it this way. If a ten-foot r
英语时差8，16