This positively charged particle, now called the positron, was indeed discovered two years after Dirac had predicted it.

迪拉克做出预测两年后，就有人真正发现这种释放正电的粒子，也就是现在的正电子。

youdao

So when, in 1928, a British physicist called Paul Dirac solved such an equation relating to the electron, the fact that one answer described the opposite of that particle might have been brushed aside as a curiosity.

ECONOMIST: Fundamental physics