标签：surface 相关文章
By piecing together the evidence these creatures left behind, we can build a picture of this sub-tropical corner of the continent as it was 13,000 years ago. While most of North America was still in the grip of the Big Freeze, Florida was an ice age
探索与发现2012年
Jack plunched down into thesea, the water was freezing cold, hepumped back up to the surface, choaking and coughing, the lifevest kept Jack closed, but the waves kept hammering at him. Help! Jack shouted. Thought to the twenty foot tiger shark, andmy
汪培珽儿童英文分级书单《神奇树屋》
023 post office Words Post office parcel letter send stamps airmail surface mail registered mail envelop counter philately postman/woman deliver(y) letterbox queue Phrases Send a parcel Seal an envelop Weigh a parcel Check the weight Pay postage Sur
情景英语口语100主题
Flawless pearls are among the most symmetrical spheres biological organs. But do they get so round? Turns out they turn. Pearls and mollusks such as oysters create so-called pearls acs around intrusive pieces of grit. The sac coat the yelten with the
Scientific American(六)月
Heres another Catch Word episode! This one focuses on expressions with the word scratch . We look at to start from scratch , to scratch the surface , and to make something from scratch . Scratch in these expressions talks about starting at the beginn
英语博客-北美风情
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
By Jessica Berman The U.S. space agency has released the first close-up pictures of Titan, Saturn's secretive, giant moon. Photos from the international Cassini spacecraft show the orbiting object shr
VOA2004（下）--健康科技
By Paul Sisco Washington, DC 02 June 2006 watch Hurricane Predictions Hurricane season in the Atlantic Ocean began June first. Alberto will be the first named Atlantic hurricane in 2006. Paul Sisco re
2006年VOA标准英语（六月）
In Africa, New Technologies Help Teach Women to Read 在非洲，新技术帮助教女人阅读 More Africans are communicating via text, social media and email. In Senegal, literacy experts are using the new technologies to motivate and teach women
VOA标准英语2014年(十月)
红土场上的滑步技巧 Sliding to return a shot is a common tennis practice on clay courts, but lately players have started using it on grass and hard courts as well. Scientists say it is faster than running and allows athletes to change directi
VOA标准英语2016年(一月)
Friday is Moon Day, which commemorates the first human landing on the Moon on July 20, 1969. To mark the occasion, let's take a look at China's lunar exploration program. The Chang'e program China's lunar exploration program started in 2004. It is na
2018CRI中国国际广播电台
This is Scientific American -Sixty Seconds Science. I'm Sophie Bushiwick. Got a minute? During a physical exam, doctors pick up a lot from their patients, including that patient's bacteria. To keep infections from spreading, physicians try to always
2014年Scientific American(三)月
Large Impacts May Cause Volcanic Eruptions巨大冲击引发火山喷发 Other rocky planets in our solar system show a common feature: within giant craters caused by impacts theres evidence of volcanic activity. Which made scientists wondercan big i
2017年Scientific American(六)月
The death toll of South Koreas capsized ferry has risen to 273, as divers searched the sunken ferry amid slower tidal currents. 31 passengers remain missing. No survivor had been reported since 172 people were saved from the ship on April 16th. South
CCTV9英语新闻2014年05月
By Paul Sisco Washington 09 April 2008 Leatherback turtles fascinate ocean researchers. The largest of sea turtles roams the world's oceans, nesting and feeding in coastal regions. Scientists say leathernecks have been doing so for at least 65 millio
VOA常速英语2008年（四月）
So in some ways, a voyage to Mars could be a voyage home. Our ancestors have made such bold trips before when we walked out of Africa, when we sailed over the horizon. If it is technically possible, our ships will head out again. We always want to se
自然百科2012年
A test run before attempting the fuel hungry and risky trip to the planet below. Dreaming about Mars and actually going there are two very different things. Mars may be our neighbour, but 35 million miles to the closest point is still a very long way
自然百科2012年
Everyone likes a vacation in a warm climate, but how about a trip to two planets that are as hot as hell? If you are walking on the surface of Mercury, you need one heck of a spacesuit. Mysterious Mercury appears lifeless and desolate, but hidden dee
自然百科2012年
The Department of Immigration has confirmed that there has been a disturbance at the Manus Island detention centre in Papua New Guinea. Immigration Minister Scott Morrison says there are reports that some asylum seekers have been arrested. He says th
澳洲ABC新闻快递2014年
今天我们要学的词是runoff. runoff 是指竞选无法分出胜负的情况下进行的决选。 Republican Cindy Hyde-Smith wins the Mississippi Senate runoff vote in an election that critics say was racially charged. 共和党人辛迪海德-史
英语单词荟萃