单词:ventricle of larynx
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Elephants dont need cell phones to hold long distance conversations, their deep calls can travel miles. And although humans cant always hear these vocalizations because of their low frequency, elephants produce them using the same mechanism that lets
Actor Michael Douglas has become the international face of throat cancer since he announced he had the disease. The actor says his doctors give him an 80 percent chance of beating the cancer. Michael Douglas didn't speak to reporters at the premiere
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For adolescent boys, a changing voice that cracks in the middle of a sentence can be a great embarrass-ment. Though embarrassing, a cracking voice is a natural part of adolescent development. As a boy goes through adolescence, his secondary sex chara