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Rebecca949 发表于 2014-5-26 09:50

VOA慢速英语2014.05.22

[audio]http://sound.yywz123.com/tingbbs/voa/voa20140522.mp3[/audio]



Scientists are working on ways to stop a disease that threatens one-fifth of the world's population. 科学家们正在研究如何消除威胁世界1/5人口的一种疾病.
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[url=http://www.tingroom.com/voa/]VOA慢速英语[/url]...


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jessica-tang 发表于 2014-7-4 12:49

which is a major part of the bodies defences for fighting disease

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