第2985期:Hedgehog secret discovered – they hear at a range far beyond humans

The researchers discovered that the European hedgehog can hear up to 85kHz, a frequency that's considered ultrasonic, far higher than humans who stop hearing past 20kHz.研究人员发现，西欧刺猬能听到达到 85 千赫的声音，这已属于超声波频段，远高于人类 20 千赫的听觉上限。The team now wants to develop sound repellents to be used in cars or lawnmowers that could emit noise at a frequency to scare off hedgehogs.基于此发现，该团队目前正致力于开发出能安装在汽车或割草机上的声音驱赶器，通过发射特定频率的噪音来吓跑刺猬。Thousands of hedgehogs a year are killed in road collisions, and the scientists say the discovery could be a game changer. It could also reveal if the animals communicate to each other using noises that humans can't hear.每年都有数千只刺猬在马路上被撞死，而科学家们表示，这项新发现可能会彻底改变现状。它或许还能揭示这些动物是否会利用人类听觉范围之外的声音进行交流。