| 释义 |
DEFINITIVE EXAMPLES 权威例句〔metazoan〕A multicellular animal of the subkingdom Metazoa, a division of the animal kingdom in traditional two-kingdom classification systems.后生动物：属后生动物亚界的一种多细胞动物，此亚界是动物界传统的两界区分系统内的一个分支美国传统〔protoctist〕Any of the unicellular protists and their descendant multicellular organisms, considered as a separate taxonomic kingdom in most modern classification systems.原生物：任何一种单细胞原生生物和作为它们后代的多细胞有机体，在大多数现代分类系统中将它分为一个单独的界美国传统 |