anti xi hyperon

例句：

1. 1.The anti-xi hyperon is a particle that has not been fully understood yet.
   反西超子是一种尚未完全理解的粒子。
2. 2.The anti-xi hyperon has been proposed as a possible explanation for the mysterious disappearance of certain celestial bodies.
   反西超子被提出作为某些天体神秘消失的可能解释。