glochidium

例句：

1. 1. The glochidium is a rare and valuable species.
   这种生物是稀有且珍贵的。
2. 2. The glochidium has been found in many different habitats around the world.
   这种生物在世界许多不同的栖息地都被发现过。
3. 3. The glochidium's unique features make it an important part of our ecosystem.
   这种生物的独特特征使其成为我们生态系统中非常重要的部分。