The debate about cellphone safety was reignited yet again last week when a panel of the World Heath Organization declared that it was "possible" the phones could cause cancer.
上周，世界卫生组织的一个小组提出：手机有可能引发癌症。之后关于手机安全性的问题再次引起了热议。
On what did the panel base its cellphone findings?
这个研究小组对手机可能致癌的依据是什么？
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