【英语时差8,16】希腊人最先发现地球是圆的（下）

Being clean is a good thing. After all, simply washing your hands regularly can help ward off flu and other contagious diseases. Maybe For the past few decades scientists have been debating the so called hygiene hypothesisthe idea that being exposed

【英语时差8,16】耳鸣（上）

Its not uncommon, now and again, to hear a ringing or buzzing in the ear. The condition is called tinnitus, and it can be caused by a number of things such as ear infections, allergies and even as a medication side effect. For most people, tinnitus i

【英语时差8,16】幼童尿床（上）

Never a happy topic, bed wetting is a very distressing problem for five to seven million American kids. If we cant explain why some people like to pick on these kids, can we at least shed some light on what causes bed wetting? At one time, people pun

【英语时差8,16】选择性平面照明显微镜

SPIM stands for Selective Plane Illumination Microscopy. SPIM is a new kind of microscope technology. It provides a significantly sharper image than current microscopes, and it also allows one to study living organisms without destroying or harming t

【英语时差8,16】骨质疏松（上）

One of the most impressive feats of muscular coordination in nature is the instance of a frog darting out its tongue in order to catch a fly. No matter how fast you are, you could never rely on plucking bugs out of the air to stay alive; but for frog

【英语时差8,16】早产性睡眠窒息

Everyone knows that caffeine keeps a person up all night. But for some people, caffeine is the doctors order for good, or the better word may be safe, sleep. Sleep apnea, a sleep disorder in which a persons breathing periodically stops for brief peri

【英语时差8,16】蛇的第六感：犁鼻系统 -下

Although snakes often have very sharp vision, a sense of smell, and a sensitivity to heat, their most important sensory system is one that we humans dont share with them at all. This sixth sense is called the vomeronasal system, and the sense organs

【英语时差8,16】蛇的第六感：犁鼻系统 -上

A foraging squirrel comes into range of a hungry, coiled rattlesnake. The squirrel realizes the danger too late-the rattlesnake strikes out and bites, fangs pumping venom deep into the squirrels small body. The poison doesnt kill immediately, but the

【英语时差8,16】为何蛇类舌头分叉-下

The key here-with both ears and eyes-is that your brain combines two different perspectives to make a more detailed, three-dimensional whole. Because you have two separate eyes and two separate ears, you can see and hear in stereo. When a snakes tong

【英语时差8,16】为何蛇类舌头分叉-上

Why do snakes have forked tongues? And why do they flick them? Is it because snakes are naturally deceitful, ready to whisper lies into passing ears? Actually, its to aid a snakes vomeronasal system-a sensory system in snakes that is akin to smell. S

【英语时差8,16】了解暖水瓶的工作原理-下

Whats A Good Insulator? How about air? Air is, in fact, a pretty good insulator, which is why styrofoam keeps things hot. Its full of air. But even better than that would be a vacuum. Because theres nothing in it to heat up, heat cant conduct through

【英语时差8,16】夜生活之：去夜总会跳舞 -中

The thing I think I like the most about clubbing for me, is when you walk into a club, you leave your ego at the door. Everyone is there to have a good time, everyone shares a similar interest in the music. When you're walking down the street in Lond

【英语时差8,16】夜生活之：去夜总会跳舞 -上

Andrea: There's house music and heavy metal... And then there's really well-known clubs like Ministry of Sound... Today we're finding out about clubbing - whether it's in London or elsewhere in Britain. Hello. I'm Andrea. We've been finding out what

【英语时差8,16】英国美国大不同-上

William: One thing that British people always say... Joe: Yeah. William: When we got to America, is we always say, Everything's so much bigger. Like... the streets are bigger, cars are bigger, refrigerators are bigger, washing machines are bigger. Wh

【英语时差8,16】网上娱乐-中

Diarmuid: Next we talked to a Greg Ros. He said that online gaming provides a much cheaper form of entertainment. Greg: If we think about entertainment and look at that compared to the spectrum of entertainment the standard things that you see out th

【英语时差8,16】冰激凌融化：热传导 -上

Live a single day on planet Earth, or anywhere else in the universe for that matter, and you will experience the natural phenomenon of heat conduction, which is the term used to describe the natural flow of heat from warmer objects to cooler ones. Yo

【英语时差8,16】难缠新娘 -上

Jean: Hello everybody and welcome to another Authentic Real English from BBC Learning English with me Jean. Diarmuid: And me Diarmuid. Jean: So, what are we going to talk about today Diarmuid? Diarmuid: I want to talk about my sister's wedding. Jean:

【英语时差8,16】难缠新娘 -下

Diarmuid: It's a combination of the words bride... And Godzilla. She's telling everyone what to do. She's demanding that everything is perfect for her big day. And if she doesn't get what she wants, she gets really upset. Jean: What a nightmare! A: I

【英语时差8,16】水墙形成时会发生什么呢-上

Next time youre sitting in the tub, try the following experiment. Stand up quickly, being careful not to fall over. The water will slosh over to fill in the place where your body was, and then slosh back in the other direction, and so on. You have cr

【英语时差8,16】水墙形成时会发生什么呢-下

Heres How..In a lake, cold water sinks to the bottom, forming a distinct layer underneath the warmer water on top. Wind blows across the top layer. This causes more of that warm layer to build up on one end of the lake, pushing the cold layer underne