语的第十九个字母;It turns out that the weak interaction causes a kaon gradually to convert into its antiparticle, the antikaon, and then back again.
弱交互作用会使k介子逐
反粒子──反k介子，然后又回来。
It turns out that the weak interaction causes a kaon gradually to convert into its antiparticle, the antikaon, and then back again.
弱交互作用会使k介子逐反粒子──反k介子，然后又回来。
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