1·The Tunguska event included seismic waves and infrasonic disturbances that were recorded around the world.
通古斯爆炸包含了地震波和次声扰乱，被世界各地记录下来。
2·The frequencies used in sonar systems vary from infrasonic to ultrasonic.
声纳所使用的频率从次声到超声不等。