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Pronunciation Guide
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Listen to native speakers pronounce “speedie” in real conversational contexts with synchronized timestamps and subtitles.
It’s sort of like what happens when you pull a Slinky out on a flat surface from both ends, and push on one side.P-waves are the speediest waves, so they’re the ones that hit first.They're what causes that initial jolt in an earthquake, but they usually aren’t very destructive.