Quadrantid

例句：

1. 1. The quadrantid is a rare and valuable gemstone.
   这个四分宝石是罕见的宝贵宝石。
2. 2. The quadrantid has been studied for its potential medical applications.
   四分宝石因其潜在的医疗应用而受到研究。
3. 3. The quadrantid was discovered in the remote region of the Amazon rainforest.
   四分宝石是在亚马逊雨林的偏远地区被发现的。