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Refugee crisis难民危机来源：刘立军TRANSCRIPTHello, I am Jerry Smithwith the BBC News.The United Nations Refugee Agency says the number of people displacedby conflict has reached the highest level ever recorded....

发布时间：2016-07-14

音频资源练习 | Melanoma

Melanoma黑素瘤来源：刘立军TRANSCRIPTELIZABETH COHEN, CNN SENIOR MEDICAL CORRESPONDENT:A melanomais a cancer that begins in the skin cells. The face and the neck are common areas for melanomas to appear.For men...

发布时间：2016-07-14