多孔动物

例句：

1. 1. Many species of animals are known to be multicellular, meaning they have many cells.
   许多物种已知是多细胞的，意味着它们有很多细胞。
2. 2. The term "multicellular" is often used in biology to describe organisms that have multiple layers ofcells.
   “多细胞”这个术语在生物学中常用来描述具有多层细胞结构的生物体。
3. 3. In the field of microbiology, multicellular organisms are those that have more than one type of cell.
   在微生物学领域，多细胞生物是指具有多种类型的细胞。