科学家们在实验室里观察到了质子与其反粒子的相互作用。

Scientists observed the interaction between protons and their ___antiparticles in the lab.

当粒子与反粒子相遇时，它们会相互湮灭并释放能量。

When particles and ___antiparticles collide, they annihilate each other and release energy.