单词：X-band microwave source
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Recently, some researchers in Australia were excited about messages from a distant galaxy. But it turns out that the signals were from a completely different source. The scientists at Parkes Observatory in Australia specialize in radio bursts- short
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[00:01.26]Unit 4 Inventions and Inventors [00:05.02]Lesson 13 [00:10.56]Exercise 1.2 [00:14.46]Microwave ovens are used by [00:16.53]millions of families every day. [00:18.99]Many of you may have a microwave oven [00:21.23]in your home. [00:22.79]the
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[00:00.00]Can Money Buy Happines [00:02.64]Can money buy happiness?Various people have various answer [00:08.62]Some people may say,Yes.In their eyes,only a rich man can live happil [00:15.54]For example,a man with plenty of money can buy delicious f
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By Kari Barber Dakar 21 March 2008 In many African countries, few people have access to computers and the Internet. Experts say this is hindering development and preventing students from being able to compete for jobs. At a conference in Dakar this w
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1.结构不平行 例：I was able to raise my TOEFL score by studying hard and I read lots of books. 当使用连词将一系列的单词联接起来的时候，应当使用词性相同或同一类型的短语。 2.不知所云 例：Many companies
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