megaspore mother cell

例句：

1. 1. The studyof this cell type is crucial for understandingthe development of complex organisms.
   研究这种细胞类型对于理解复杂生物的发展至关重要。
2. 2. Inthis process, the giant sporemother cells undergo a series of transformationsto eventually produce the mature spores.
   在这一过程中，巨型孢子母细胞经历了一系列的转化，最终产生成熟的孢子。
3. 3. Thediscovery of this cell type has opened upnew possibilities for studying the evolution of lifeon Earth.
   发现这种细胞类型为研究地球上生命进化提供了新的可能性。