美国有线电视 CNN 2008-12-29

Hello to you, I'm Creshon Saunders at the CNN.com Newsroom in Atlanta. Here is a look at what's happening NOW IN THE NOWS. Israel is pounding Gaza with airstrikes for a second day in a row. Hamas militants are the target and Israeli Prime Minister E

万物简史 第398期:浩瀚的海洋(17)

Millions of gallons of fresh water evaporate from the ocean daily, leaving all their salts behind, 每天有几百万加仑淡水从海洋蒸发，留下了全部盐分， so logically the seas ought to grow more salty with the passing years, but the

Earth and Sky:Water Cycle 水循环

Water Cycle 水循环 All the oceans on earth are salty, while inland water is typically fresh. How does water become salty? We'll answer a listener's question -- today on Earth and Sky. DB: This is Earth and Sky. We recently visited the Austin Childr

万物简史 第478期:生命在前进(20)

Many of the Burgess specimens have now been assigned to living phyla just where Walcott put them in the first place. 许多布尔吉斯标本现在已经归到活着的动物的门里就是沃尔科特最初放置它们的地方。 Hallucigenia and s

SSS 2011-03-29

This is Scientific Americans 60-Second Science. Im Steve Mirsky. Got a minute? To keep your car purring, you have to change the oil. Such maintenance produces eight billion gallons of used motor oil annually. Some waste oil does get re-refined to pro

SSS 2011-09-26

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Life requires balance. We balance work and family. We eat a balanced breakfast, sometimes. And we balance our electrolytes. That salt-water synergy is no

想聊就聊-2.01.5饮食卫生

M: Please do excuse me for a moment. I've got diarrhea. W: It's easy to get loose bowels in summer. M: It may have something to do with the food I had last night W: Youve got to be careful on the food you eat. M: I will. Thank you.

英文书摘精选 有趣的事实,短嘴鳄可以再长牙齿

Fun Fact: Alligators Can Regrow Teeth 有趣的事实：短嘴鳄可以再长牙齿 Fun fact about alligators: they can regrow any of their eighty teeth up to fifty times. Which is pretty impressive, especially compared to us relatively dentally chal

英语听力文摘 English Digest 600、科学家如何预测火山喷发？

its time again for the A Moment of Science mailbag. A listener writes: Dear A Moment of Science, Ive always been fascinated by volcanoes. So I was wondering: How well can scientists predict when and where a volcano will erupt? Intersting question. Th

SSS 2008-04-17

This is Scientific American's 60-Second Science. I am Steve Mirsky.Got a minute? Talk about your vicious cycles. A new study finds that belly fat could be making you hungrier. Which would lead to more belly fat. The research was performed at the Univ

SSS 2009-11-13

Algae seem harmless enough. These precursors to plants thrive throughout the world's waters. But these single-celled plants have global consequences. We can thank them for oxygen in the atmosphere, oil in the lithosphere as well as dead zones in the

薰衣草催眠曲Lavender lullaby

Its easy and relaxing to make and use bath salts at home 在家里制作并使用浴盐很容易也让人非常放松 1/3 cup baking soda 1/3 cup Epsom salts 1/3 cup sea salt 10 drops lavender essential oil 1/3 杯发酵粉 1/3 杯泻盐 1/3 滴薰衣草

VOA标准英语,Drug,US,Author

Synthetic Drug Problematic for US Authorities Augusta County, Virginia, is a rural county in the Blue Ridge Mountains, two and a half hours southwest of Washington. It has a big problem. Sheriff Randy Fisher says Augusta County was once known as the

英语口语900句 09.01.单句

I don't feel well. I have a fever. I have a cold. I have a headache. My eyes are very itchy. I have trouble breathing. I have a stomachache. I have loose bowels. My hand was scalded by boiling water. My ankle is twisted.

英语听力：自然百科 为什么海水是咸的？

This week on Why Tell Me Why, we are finding out why the oceans are so salty. So the oceans are salty because the oceans have been around, lets say, for over five hundred million years. And over the course of time what we found out is that weve alway

万物简史 第149期:基本物质(21)

The nineteenth century held one last great surprise for chemists. It began in 1896 when Henri Becquerel in Paris carelessly left a packet of uranium salts on a wrapped photographic plate in a drawer. When he took theplate out some time later, he was

Researchers make sperm from stem cell in dish

WASHINGTON, Aug. 4 (Xinhua) -- Researchers have found a way to turn mouse embryonic stem cells into sperm and this finding opens up new avenues for infertility research and treatment, according to astudy published Thursday in the online edition of jo

英语听书《海底两万里》第232期 第18章 太平洋下四千里(4)

What's more, I've detected those falling and rising currents that make up the ocean's true breathing. 此外，我又注意过那些由上而下和由下而上的水流，形成真正的海洋呼吸作用。 I've seen a molecule of salt water heat up

万物简史 第385期:浩瀚的海洋(4)

Water is so vital to us that it is easy to overlook that all but the smallest fraction of the water on Earth is poisonous to us, 水对我们太重要了，因此我们不容易注意到，地球上绝大部分的水对我们来说都是有毒的，

迷你对话学地道口语第454期:迅速

迷你对话 A: When you went to the dormitory this morning, had your roommates came like a dose of salts? 你今早去宿舍的时候，你的室友已经来了吗？ B: Not yet. All my roommates came like a dose of salts. 还没有，但是我的室友