锡默斯，系马克斯·普朗克鸟类研究所感官生态学研究小组负责人，说蝙蝠达能到8个八度比最好的人类女高音能发出的音调更高。

Siemers, research leader of the Sensory Ecology Group at the Max Planck Institute for Ornithology, said the bats reach notes that are 8 octaves higher than what the best human sopranos can produce.

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陈学凯，教授，西安交通大学人文学院历史文化研究所所长毕业于南开大学历史系中国古代史专业，获历史学硕士。

Chen Xuekai, was born in 1954. He graduated from Nankai University with the major of Chinese Ancient History in the History Department, and was granted the master's degree.

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陈学凯，教授，西安交通大学人文学院历史文化研究所所长毕业于南开大学历史系中国古代史专业，获历史学硕士。

Chen Xuekai, was born in 1954. He graduated from Nankai University with the major of Chinese Ancient History in the History Department, and was granted the master's degree.

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