Researchers in Japan have discovered that lar gibbons use the same techniques as human soprano singers to make their melodic but piercing calls.
BBC: Helium-huffing gibbons 'sing with soprano technique'
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。