李华和Larry在学生中心的咖啡馆里休息。今天李华会学到两个常用语:cop out和to get worked up. LL: Hey Li Hua. Some friends and I are planning to go camping and hiking next mo...
HEALTH REPORT - How Antiviral Drugs Work By Jerilyn Watson Broadcast: Wednesday, February 11, 2004 This is the VOA Special English Health Report. A representation of how viruses attack a cell. Here is...
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