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Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文，请发贴到听力原文收集区，您将会获得10到30积分的奖励! Thank you！

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学英语单词

acid-frac

anchor clutch

auriculo-ventricular node

CAM (computer aided manufacturing)

carburated

coherence of laser beam

coliform group