概述：比利时的科学家研究水虎鱼以得知关于它们制造的不寻常的声音的信息。
Hints:
Eric Parmentier
University of Liege
校对：不睡漫漫
翻译：superabit
组长：zpdslshhz
答疑：trans0829
Piranhas are known as dangerous, meat-eating fish. However that did not stop scientists in Belgium from working with them to learn more about the sounds these unusual fish make. There are more than 20 different species of piranhas in the wild. Two or three of them are a threat to humans. Among t…
众所周知，水虎鱼是很危险的肉食性鱼类。然而比利时的科学家们并未因此踌躇不前，他们正试图对水虎鱼发出的独特声音做进一步的研究。 野生的水虎鱼有二十多种，其中两到三种对人类具有威胁。红腹水虎鱼就是其中一种。尽管科学家们知道红腹水虎鱼能够发出声音，但它们发出声音的原因和场合仍旧是个谜。于是一组科学家着手…