| 1 | What we want to know is if they can detect those rumbles in the ground. | |
| 2 | Therefore some people call it "the silent murderer", "the mute weapon" the infrasonic wave weapon and so on. | |
| 3 | What we want to know is if they can detect those rumbles in the ground. -Donna will be tested on her response to seismic activity. | |
| 4 | Infrasound transmits at a specific speed and infrasound sensors can determine the basic direction from where the infrasound signal comes from. | |
| 5 | Moreover, so long as in the safe guard will have the hole or the slit, the infrasonic wave will also seize every opportunity the earth-boring auger to go. |
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