The study by Wits University in south Africa suggests seismic signals are effective way of keeping elephants from coming into contact with humans.

来自南非金山大学的研究表明，地震信号能够有效地驱逐大象。

One study author said this was the first time sloshing water had been identified as a global seismic signal for days at a time.

一位研究作者说，这是人们第一次将晃动的水当做是数天来全球地震的信号。

De Plaen says he and his colleagues have been able to detect " songs" — in this case, seismic signals — they didn't even know existed.

德普莱恩说， 他和他的同事已经能够检测到“歌曲” ——在这种情况下， 是地震信号——他们甚至不知道存在。

During the global lockdown, De Plaen says he and his colleagues have been able to detect " songs" — in this case, seismic signals — they didn't even know existed.

De Plaen 说在全球封锁期间，他和他的同事已经能探测到从前闻所未闻的“歌声”了——在此指的是地震信号。