Listen to native speakers pronounce “cosmic rays” in real conversational contexts with synchronized timestamps and subtitles.
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14:11
physicists discovered it about two decades ago and they started building an underground laboratory essentially for experiments which needed to be shielded bycosmic rays on the surface of the earth you go underground. So in this case you go about a half a mile underground, uh, using just this shaft. That'sall there is. It's a -- a cage that's been operating since when the mine was functioning. And it takes three minutes in complete darkness and it's a rattling
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