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Rho Ophiuchi dark cloud is one of the closest star-forming regions to our own solar system. Located near the constellations Scorpius and Ophiuchus, the nebula is about 407 light years away from Earth. The infrared astronomical satellite, now celebra
国家地理2008年
前元音：[e] 发音规则： 发音时舌尖抵下齿，舌前部稍抬高，舌位比[e] 更低； 双唇平伸，成扁平形。发音时声带振动。 该音是字母在重读闭音节中的发音。[]是短元音。 技巧提示： 常见发[
英语国际音标
迈克尔.杰克逊：ben Ben Ben, the two of us need look no more We both found what we were looking for With a friend to call my own I'll never be alone And you my friend will see You've got a friend in me Ben, you're always running here and there
迈克尔杰克逊经典歌曲
有的学生发/e/音容易张口过大，而发/?/则容易张口不足。许多人在区分这两个音的时候，只注意到它们的张口程度大小不同，这倒也没错，但还要注意这两个音的发音效果也不区别，发/?/音时
实用英语
介绍: 美式发音At读音的变化 本来 /?t/ 弱读 ①/?t/ 何时读这个音后面单词以辅音发音开始 I'll be at school. 我会在学校。 He's at the table. 他在桌子旁边。 Are you free at lunch? 午饭你有空吗 ②/?d/ 何时
英语俚语天天说
Transcript for Reference Only --chunshan The infrared astronomical satellite, now celebrating its 25th anniversary, gave us the first all sky view of our dusty infrared universe. Floating above the galactic center is the Rho Ophiuchi Cloud, about 400
自然百科2008年