Exosomes are actively secreted microvesicles, whose characteristics reflect those of the cell they are originated in.
胞外体是一种主动分泌的微囊泡，他的特征反映其起源于何种细胞。
The biological ways are to make use of characteristics that secretion secreted from some microorganisms can dissolve the aluminosilicates, and then the silicon may be removed from bauxite.
生物方法则利用一些微生物的分泌物能够溶解铝硅酸盐矿物的特性，将铝土矿中的硅脱除。
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