Pronunciation Guide50 real video occurrences

How to pronounce “crack” in English

Listen to native speakers pronounce crack in real conversational contexts with synchronized timestamps and subtitles.

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19:55

- In a nuclear fission reactor, you put enough of this fissile material, uranium or plutonium, together such that as these unstable molecules, these unstable atomscrack open and break apart, they release heat, that the component parts of those are actually quite hot. And so not only are the component parts that the uranium breaks into, and it's a whole spectrum of different atoms and atomic nuclei,and it's a whole spectrum of different atoms and atomic nuclei, are hot, but it also releases neutrons.

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