It begins to decay and emit positrons, aka, anti electrons.

它开始衰变并释放正电子，也就是反电子。

As early as 1932, the first positrons or anti electrons were discovered in cosmic rays and in 1955, scientists from Berkeley managed to obtain anti protons.

早在1932年，在宇宙射线中发现了第一批正电子或反电子，1955年，伯克利的科学家们成功地获得了反质子。

The letters C in this abbreviation means conjugation of charges, that is each elementary particle has a twin with an opposite charge: antineutrons, electrons, anti electrons, or positrons, and so on.

字母 C 在这个缩写中的意思是电荷的共轭，即每个基本粒子都有一个带相反电荷的孪生体：反中子、电子、反电子或正电子等等。