原生质体植物细胞或细菌细胞的有生命的部分，包括原生质和去掉细胞壁后的质膜

The living material of a plant or bacterial cell, including the protoplasm and plasma membrane after the cell wall has been removed.

腐生菌；腐生物一种有机物，通常是细菌以死的动植物为食并把它们分解，藉此为生态系统提供有机养分

An organism, often a bacterium or fungus, that feeds on and breaks down dead plant or animal matter, thus making organic nutrients available to the ecosystem.