a. 不能溶解的, 不能解决的

[医] 不溶解的

Insoluble \In*sol"u*ble\, a. [L. insolubilis indissoluble, that
can not be loosed: cf. F. insoluble. See {In-} not, and
{Soluble}, and cf. {Insolvable}.]
1. Not soluble; in capable or difficult of being dissolved,
as by a liquid; as, chalk is insoluble in water.

2. Not to be solved or explained; insolvable; as, an
insoluble doubt, question, or difficulty.

3. Strong. ``An insoluble wall.'' [Obs.] --Holland