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  1. Oxford Dictionary

    hydrogen bomb

    英式

    • n.
      an immensely powerful bomb whose destructive power comes from the rapid release of energy during the nuclear fusion of isotopes of hydrogen (deuterium and tritium), using an atom bomb as a trigger.

    • noun: hydrogen bomb, plural noun: hydrogen bombs

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    hydrogen bomb

    • IPA[ˈhīdrəjən bäm]

    美式

    • n.
      an immensely powerful bomb whose destructive power comes from the rapid release of energy ...

    Oxford American Dictionary