Positron and electron (particle and anti-particle) can annihilate in collision turning into electromagnetic radiation.
正电子和电子(粒子和反粒子)在对撞中会发生湮灭，并产生电磁辐射。
2
Meanwhile, the anti-X particle decays either to an antineutron or to two "hidden" antiparticles: anti-Y and anti-theta.
同时，一个反“X”粒子要么衰变成一个反中子，要么衰变成两个未知的粒子：反“Y”粒子和反“θ”粒子。
3
This first recorded particle is a meson composed of an anti-beauty quark – the beauty quark's antiparticle – and an up quark – one of the two common quarks that make up protons and neutrons.