Generators, vehicles and airplanes all can make a lot of seismic noise and can easily drown out elephant calls entirely.

发电机、车辆、飞机都能制造大量的地震波，而且轻易就把大象的声音完全盖过。

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Generators, vehicles and airplanes all can make a lot of seismic noise and can easily drown out elephant calls entirely.

发电机、车辆、飞机都能制造大量的地震波，而且轻易就把大象的声音完全盖过。

youdao