subquark

例句：

1. 1. Subquarks are the smallest particles that can be directly observed.
   次夸克是可以直接观测到的最小的粒子。
2. 2. The discovery of subquarks has revolutionized our understanding of particle physics.
   发现次夸克已经彻底改变了我们对粒子物理学的理解。
3. 3. Subquarks have been proposed as a possible explanation for the dark matter in the universe.
   次夸克被提出作为解释宇宙中暗物质的可能原因。