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Listen to native speakers pronounce “backtrack” as a verb in real conversational contexts with synchronized timestamps and subtitles.
There was, about 10 years ago, a purported observation of a particle also that would be a pentaquark.Let me backtrack a little, because I don't think all of you know about what pentaquarks are or maybe even what quarks are.But in our understanding of the strongly interacting particles, of which protons and neutrons are the simplest and most
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