zoocyst

例句：

1. 1. The zoocysts are the reproductive structures of hydroids.
   水螅囊是水螅的生殖结构。
2. 2.Zooocysts are a common component of marine ecosystems.
   水螅囊是海洋生态系统中常见的组成部分。
3. 3.The zoocysts are known for their unique ability to adapt to changing environments.
   水螅囊因其适应环境变化的独特能力而闻名。