单词:electrolytic fractionating
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Unit 6 Matching Dreams with Education (II) Part I Warming up A. Tapescript: There is a great demand for graduates with high-tech degrees, but fewer students were going for them. A new study by 'the American Electronics Association found that high-tec
This is Scientific American's 60-Second Science, I am Cynthia Graber. This'll just take a minute. For women who are rather well-endowed, working out can sometimes be, well, a bit of a pain. Finding a good sports bra is key, now new research on breast
[00:19.23]We hope there be some-thing-a-ling-a-ling that we can do for you. [00:25.31]In autumn,winter,spring a-ling-a ling and all the whole year through, [00:31.50]We'll ring-a-ling-a-ling,And ting-a-ling-a-ling,And ching-a-ling-a-ling for you. [00
VOICE ONE: Welcome to THIS IS AMERICA in VOA Special English. I'm Barbara Klein. VOICE TWO: And I'm Steve Ember. The United States has had fifty states for fifty years. Alaska and Hawaii both joined the Union in nineteen fifty-nine. They were the fi
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