标签：时差 相关文章
Have you ever taken a good look at your dog and wondered, where did this creature come from? Sure, you know your dog came from the local shelter or a pet store, but what about before that? If you were able to trace your dog's lineage back to its orig
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Global warming is a real problem, but would you believe that we are actually living in an ice age right now? Yael and Don discuss it. Y: Brrr! Thanks for lunch Don, but it's a little cold to be walking back to the office. D: Well, it is winter. Y: Ac
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If you have a dog, you may have noticed that sometimes it seems to be smiling. But, of course, we know that dogs don't really smile. That's just how dog mouths appear sometimes, right? Perhaps, but according to neuroscientist Jaak Panksepp of Bowling
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Amid the shocking events that occurred on September 11th, one of the most startling was the sight of the collapse of the Twin Towers soon after hijacked planes hit them. In this Moment of Science we explain how and why the collapse occurred. Designed
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He speeds into battle in a fiery flash, laying waste to all challengers. That's not just Iron Man but the film's likely box-office outcome, too, as the summer's top hit. Movie studios and exhibitors are desperate for a hit, with 2008 attendance down
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Don: Today, on A Moment of Science, the Ocean's Most Wanted. Sure, they might seem innocent and downright lovely in your aquarium, but released into the wild, your plants and fish can knock aquatic ecosystems right out of balance. Today's invasive sp
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You're hiking through the Rockies one day when you hear a low, ominous rumble. Landslide! Hundreds of tons of rock and soil are careening toward you at enormous speed. Fortunately, there's a helicopter nearby and you lift off just in time to escape u
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Ya?l: Today, on A Moment of Science, another episode of guilty confessions. That's right. Don is going to confess a secret, and then we'll use science to help him understand it. Don: I confess nothing, Ya?l. My conscience is clear. Y: Then how come I
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【主题】 From today we'll be starting learning some short sentences from hit American films which are ways of telling people you'll listen to them. This morning I would like to share one which means I want to know something.. It's said before ask
英语早间课堂
【主题】 Last time we learned So, tell me(something).. 意思是：来吧，说说看。If we want to express 说说看这是怎么回事。. Then how should we put it. Alright, let's get the answer from the following dialogue. A : I went on a da
英语早间课堂
Don: Say something, Yael. Say whatever you want, but talk directly into my right ear. Y: You're a nut. D: Okay. Now say the same thing in my left ear. Y: Sure thing. You're still a nut. Now what on earth is this about? D: Hold up. Now sing something
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Mike: Hi, Amanda. What do you think of my new sneakers? I just bought them at Wufenpu a few days ago. Amanda: They look pretty snazzy, Mike. I especially like that color-what a striking shade of blue! How much did you end up paying for them? Mike: We
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Dear Annie: I have been dating a wonderful man who is very special but has absolutely no table etiquette. I know I should try to overlook it, but I can't. Jed talks with his mouth full, chows down as if he hasn't eaten in a month, uses his fingers to
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Let's say you're an eighteen-year-old male who runs every other day, logging 12 miles a week. Now fast-forward to your late 40s. Your eating habits are the same. To maintain your high school weight, how many miles a week would you need to run? Believ
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Yael: They say that no two fingerprints are alike, but my daughter's fingerprints sure look similar to mine. Don: While the intricate details of an individual fingerprint are unique, pattern types and the overall size, shape, and spacing of the ridge
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Other anthropologists think its because meat-eating isnt the key at all, that the real key is cooked tubers, like yams. They say an increase in calories is whats important when it comes to the development of larger brains, and that cooked tubers woul
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It's 3 a.m., pitch dark, and you can't sleep. How can you survive the next day after being awake so long the night before? Difficulty sleeping is a common problem, but there are ways to escape it. Falling asleep is something passive and not forceable
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Probably all, or nearly all, who have experienced a cold winter, are familiar with the cheery cry of the snow as it is pressed against a hard surface by the steel tire of a wagon, for instance, or even onto a pavement by the heels of ones boots. Thos
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Since that time, scientists have found that numerous species of fungi produce chemicals to destroy bacteria and that bacteria even produce chemicals that destroy other bacteria. Antibiotics are relatively new in modern medicine, but the earliest medi
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But measuring movement is actually pretty tricky. Any small mistake in the measured acceleration results in position errors that grow with time. So even if youre standing still and just rocking in place, a navigation computer relying solely on the IM
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