a. 非决定性的, 无效果的, 不得要领的

[法] 非决定性的, 不确定的, 无结果的

[ adj ]
not conclusive; not putting an end to doubt or question
<adj.all>
an inconclusive replyinconclusive evidence
the inconclusive committee vote

Inconclusive \In`con*clu"sive\, a.
Not conclusive; leading to no conclusion; not closing or
settling a point in debate, or a doubtful question; as,
evidence is inconclusive when it does not exhibit the truth
of a disputed case in such a manner as to satisfy the mind,
and put an end to debate or doubt.

Arguments . . . inconclusive and impertinent. --South.
-- {In`con*clu"sive*ly}, adv. -- {In`con*clu"sive*ness}, n.