单词：elementary aerodynamics
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But people won't decide to do it until they recognize the need for it, and that's the problem that we have right now. 但是直到人民意识到真正的需要，才会决定去做，这就是现在的问题所在。 So there's been plenty of people
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This is the VOA Special English Education Report. In the last ten years, hundreds of American schools have begun to offer a new way to teach foreign languages. This method is called dual or two-way immersion. Here is how it works at London Towne Elem
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What do a hummingbird, a moth, and a maple tree have in common? They all use a similar trick to fly. Okay, okay, a maple tree doesnt fly. But its seeds kind of do. Maples make those little whirlybird seeds you see spiraling down in droves each sprin
60秒科学
Lesson 356 I'm improving. 1.I'm improving.我好多了。 2.My work is improving.我的工作渐有起色。 3.My health is improving.我的健康善正在好转。 4.I'll improve it.我会加以改进。 5.I want to improve my English.我想提高英语
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You know, most people in life major in minor things. That is, theyre focused on how to make a living instead of how to design their life. They get caught up in the day-to-day experiences that they make real important when actually, in the long term,
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