excretive

Retiary fibers, excretive articles and host cell with the ball cyst.

囊内面有分泌颗粒、网状纤维及绒球状宿主细胞.

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Is drivel how of excretive and generation? Can be you synthesized artificially?

鼻涕是如何分泌的和产生的? 可以人工合成 吗 ?

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