标签：振动 相关文章
New Camera Records Invisible Motion 新相机记录看似无形的运动 The world around us is in constant motion, even objects that seem to be perfectly still. Researchers at the Massachusetts Institute of Technology use a special camera that offer
VOA标准英语2015年(二月)
英语的26个字母是我们学习英语的基础，但是能全部读对，说对的人，寥寥无几，今天我们就来看一下这26个字母中最常见的发音错误。 A 发音误区：发成中文中的爱 正确发音：[e?]/[e] C/G/J/ K
卡卡课堂早餐英语
That fork, called happy folk. It's the fork to tell you to eat more slowly. It tells you to eat more slowly.Where are you from? Where are you from? I'm from Paris. France. So you come up with this in France where you eat cheese and wine. As you hold
万花筒2013年
天气很好，妈妈让阿美带着丹尼尔去街上走走，缓解学习压力。走在路上的时候，丹尼尔随口吐口香糖，这引起了阿美的强烈不满，随即教育弟弟要维护公共卫生。 Listen Read Learn (Daniel casually spits the gum. May feels angry.) May: Daniel, you can't spit the gum
英语口语大赢家
图片1 sake v. 摇动，摇，颤抖，震动 n. 摇动，摇，颤抖，震动 例句：Give the bottle a couple of shakes before pouring the juice. 倒果前，先把瓶子摇几下。 quake n. 地震 例句：The ground quaked under my feet. 大地
漫画搞定六级词汇（文本+音频）
数字11,12,13作为最基本，最常见的数次，虽然不少人能看懂，会写，但是能真正读准，挺准的人，实在是寥寥无几。为什么呢？因为这个数字中所包含的发音陷阱实在是太多了。今天我们就来细
卡卡课堂早餐英语
/f/ 唇齿摩擦辅音。发音时下唇轻触上齿，气流由唇齿间通过，形成摩擦音。这是个清辅音，发音时送气强，但声带不振动。 [] 双唇微开，舌头伸出来，上下齿轻咬住舌尖，将气流从牙齿的缝隙
卡卡课堂早餐英语
In an attempt to draw everything together, physicists have come up with something called superstring theory. This postulates that all those little things like quarks and leptons that we had previously thought of as particles are actually stringsvibra
万物简史
摩擦音[tʃ] 发音要领: [tʃ]是齿龈硬腭摩擦音一一舌位:先将舌尖抵住上齿龈，不留空隙，形成发[t]的音位，然后舌尖与上齿龈慢慢地分开让气流缓缓地从缝隙中冲出；唇形:唇形从[t]的自然张开
英语国际音标