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  • VOA标准英语2011--Bioengineered Spinal Disc Could Relieve

    Bioengineered Spinal Disc Could Relieve Back Pain Researchers at Cornell University in New York have developed an artificial spinal disc that may help patients with chronic back pain and other disc problems. The spine is a column of bones alternating...

  • 四级范文背诵50篇 10

    How should college students relieve pressure? Todays college students face many pressures, mainly from parents expectation, study, economy, employment and all kinds of competition. Although pressure, to some extent, can provide motivation, overdue pr...

  • VOA标准英语2008年-Guineans Relieved to Avoid Violence, But Still

    By Nico Colombant Conakry 10 January 2008 Many Guineans in the capital, Conakry, want to avoid violence, but still want to find a way to get rid of long-standing President Lansana Conte. Union leaders who have led recent mass protests against his rul...

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