不能分解的,不能分離的,不能解決的
Irresolvable \Ir`re*solv"a*ble\, a. [Pref. ir- not + resolvable. Cf. {Irresoluble}.] Incapable of being resolved; not separable into component parts. {Irresolvable nebul[ae]} (Astron.), nebul[ae] of a cloudlike appearance, which have not yet been resolved by the telescope into stars.