The outer wall (extine) of the pollen grain is often diagnostic (see pollen) and very resistant to decay.
花
壁（花壁）通常为特异性的并很难腐烂。
壁；孢子壁The outer wall (extine) of the pollen grain is often diagnostic (see pollen) and very resistant to decay.
花壁（花壁）通常为特异性的并很难腐烂。
声
：以上例句、词性分类均由互联网资源自动生成，部分未经过人工审核，其表达
不代表本软件的观点；若发现问题，欢迎向我们指正。
