【英语时差8,16】极地海洋并非生态沙漠

The polar oceans are not biological deserts after all. A marine census released recently documented 7,500 species living in the Antarctic and 5,500 in the Arctic, including several hundred that researchers believe could be new to science. Most of the

【英语时差8,16】蜂蜜：天然保鲜剂（下）

So because of its high sugar concentration, pure honey will never ferment or go bad. It may crystallize but by soaking the jar in hot water you can turn it back into a liquid. Adding water, however, lowers the concentration of sugar in the honey and

【英语时差8,16】人类大脑的进化（上）

Our development of larger brains had much to do with our evolution as a species. But the question is, what fueled the development of those larger brains? The most popular theory among anthropologists is that we switched to an omnivorous diet. Our anc

【英语时差8,16】公平竞争 -下

Man: Oooooh! Ref, I can't believe it?! Man 2: That is a shame. That is a shame. Man: What a joke! This referee needs to get some glasses. Man 2: Yeah, but fair play to him, that player was offside. William: Yeah, fair play to him. Now although this p

【英语时差8,16】好事儿-上

Diarmuid: Hi Jean. You look very pleased with yourself today. Jean: Hi Diarmuid. I am in a very good mood today. Diarmuid: Why's that then? Jean: Well, I've had some good news. Diarmuid: Really, what's happened? Jean: I've been given a promotion and

【英语时差8,16】英国：苏格兰 -下

It is cold, and it is damp and it does get dark very early. And you know so you want warm comfort food and warm comfort food is delicious and it is simple, but it takes time to prepare. So you can see over a long period of time how people began to de

【英语时差8,16】疫苗如何运作-上

When a virus enters your body, your body has to recognize it then produce a protein called an antibody. These antibodies attached to the virus and neutralize it. However, in the time it takes your body to produce enough antibodies, the virus may have

【英语时差8,16】介绍北爱尔兰 -上

Andrea: It was created as a distinct division of the United Kingdom in 1921. And it now shares a border with the Republic of Ireland. Today we're going to be finding out a little bit about Northern Ireland, one of four countries that make up the Unit

【英语时差8,16】虫子是如何浮在水面的？-上

Its summertime, and youre on vacation. You sit beside a quiet pond, fishing, trying to relax, trying to think about nothing at all. You watch the leaves stirring, the water rippling in the sunshine, and the water bugs standing on the surface of the w

【英语时差8,16】虫子，涟漪与水上行走-上

On our last program, we learned how water bugs manage to stand on the surface of a pond: The pads of their feet resist contact with the water just like wax paper does. This allows the bug to rest on the thin film of surface tension that naturally cov

【英语时差8,16】介绍北爱尔兰 -中

Andrea: They taught the people living on farms. They used barns or even kitchens in people's houses to teach people how to dance. And today it's still really popular and probably one of Ireland's most famous exports. People all over the world study I

【英语时差8,16】介绍北爱尔兰 -下

Dancing is not like instant coffee. It takes time. They've watched a video of Lord of the Dance and they come in and expect to be able to do something like that. It just does not happen. Andrea: She says that learning Irish dancing isn't like instant

【英语时差8,16】搭讪 -下

Jean: Hmm, didn't work, eh? Why don't you try a different girl? She looks nice. Diarmuid: Ok, wait here... Hi, I'm Diarmuid. You know when they invented the alphabet they should have put U and I together. Can I get you a drink? Girl 2: No thanks. I'l

【英语时差8,16】跷跷板-上

Remember seesaws? Those things were great. But there was often a problem. Suppose theres a big kid on one side and a smaller kid on the other side. The seesaw just stays in one position: big kid on the ground, smaller kid up in the air. No fun. After

【英语时差8,16】英国新首相-上

After days of political horse-trading the UK finally has a new government and a new Prime Minister, following the resignation of Labour's Gordon Brown on Tuesday evening. Since last Thursday's general election resulted in a hung parliament, a situati

【英语时差8,16】网上娱乐-下

Diarmuid: Next we will hear from a university student, Nikhil how he created a blog to entertain other people around the world. Nikhil: Hi my name's Nikhil Sharma, I'm a first year Computing and Information Systems student. I write a blog, so I use t

【英语时差8,16】跷跷板-下

Theres a simple way to figure out where the center of mass is. If the big kid is two times as heavy as the little kid, then their mutual center of mass will be two times closer to the big kid than to the little kid. Three times heavier and the center

【英语时差8,16】英国新首相-下

The Conservative party won 306 seats while Labour and the Liberal Democrats got 258 and 57 seats respectively. This meant that the Liberal Democrats effectively became 'kingmakers', with the power to choose which rival to form a coalition with. Both

【英语时差8,16】书店街-下

Kate: We also have rooms with second-hand and antiquarian books; we stock sheet music, which a lot of bookshops wouldn't consider stocking; so there's something for everyone there really; we've got a very big children's department with a tank with pi

【英语时差8,16】走路不是简单活-下

Walking is a complex muscular phenomenon that amounts to allowing yourself to fall slightly forward and then preventing yourself from falling completely by extending your foot. The extended foot halts the motion which was begun partly by gravity and