haptocyst

例句：

1. 1. The haptocyst is a small sac that contains the sperm and egg.
   囊泡是包含精子和卵子的小囊。
2. 2. The haptocyst plays a crucial role in the development of the embryo.
   囊泡在胚胎发育中起着至关重要的作用。
3. 3. The haptocyst is often filled with fluids that can be used to transport nutrients throughout the body.
   囊泡经常被充满液体，这些液体可以在整个身体中运输营养物质。