eucleid

例句：

1. 1. The eucleid is a rare and valuable gemstone.
   欧克利德是一种罕见的珍贵宝石。
2. 2. The eucleid was discovered in the depths of the ocean.
   欧克利德是在海洋深处被发现的。
3. 3. The eucleid has been used in ancient civilizations for its healing properties.
   欧克利德在古代文明中被用于其治疗性质。