There have been fears that cancer could be triggered by the brain's exposure to electromagnetic radiation emitted from mobile handsets held to the ear.
曾经人们很担忧，由于手机听筒接近耳朵，使大脑长期暴露在电磁辐射之下，有可能会引发癌症。
2
Scientists have focused on the potential risk of brain cancer when phones are held against the user's ear.
科学家一直把目光集中在手机使用者得脑癌的潜在危险，因为手机一般是被拿到耳朵旁边的。
3
One local mom, Melinda Reilly of Orinda, reacted cautiously to Dr. Herberman's warning about children's cancer risk. "I got myself, my husband, and daughter ear buds," she said.