1、Elephants are known to communicate using infrasonic sounds that are below the range of human hearing.
大象被认为是使用次声音进行交流的，这些声音低于人类听力范围。
2、Some animals, such as whales and elephants, can produce infrasonic vibrations as a means of long-distance communication.
一些动物，如鲸鱼和大象，可以通过次声振动进行远距离通信。