the conclusiveness of sth
抽象名词，通常带定冠词 the，of 后接被说明的对象。
The conclusiveness of the evidence convinced the jury.
证据的决定性说服了陪审团。
结论性；决定性；确定性
最后；释疑
the state of being conclusive; the quality of being definitive and leaving no room for doubt
决定性
the state of being conclusive
The conclusiveness of the experiment's results left no room for doubt.
实验结果的结论性不容置疑。
用法提示：此处名词conclusiveness指实验结果具有不容置疑的确定性。
The lawyer argued for the conclusiveness of the evidence presented.
律师论证了所呈证据的结论性。
用法提示：这里conclusiveness强调证据的最终决定性。
Scientists sought to establish the conclusiveness of their theory through multiple tests.
科学家们试图通过多次测试来确立其理论的结论性。
用法提示：句中conclusiveness表示理论经过验证的确定性。
抽象名词，通常带定冠词 the，of 后接被说明的对象。
The conclusiveness of the evidence convinced the jury.
证据的决定性说服了陪审团。
作不可数名词单独使用，前面不加冠词，常见于 lack 之后。
The report lacks conclusiveness.
这份报告缺乏决定性。
表示对某结论是否具有决定性提出怀疑。
Several researchers questioned the conclusiveness of the trial.
几位研究人员质疑了这项试验的决定性。
grammar · medium
易错句子Her argument was conclusiveness.
正确表达Her argument was conclusive.
系动词 be 后作表语要用形容词 conclusive（有说服力的、决定性的），而 conclusiveness 是名词，只能作主语、宾语或介词宾语，不能单独作表语。改后句子既合乎语法，意思也保持不变。
grammar · medium
易错句子The essay lacks a conclusiveness.
正确表达The essay lacks conclusiveness.
由 -ness 构成的抽象名词 conclusiveness 表示“性质、状态”，是不可数名词，前面不加不定冠词 a/an。lack 后直接跟不可数名词 conclusiveness 即可；若确有“一种……的性质”，英语通常改用 a certain conclusiveness 之类的说法。
grammar · medium
易错句子In conclusiveness, we should invest more in research.
正确表达In conclusion, we should invest more in research.
表示“最后、总之”的固定短语是 in conclusion，conclusion 意为“结论”；conclusiveness 指“具有决定性的性质”，不能用于该短语，否则句子既不合固定搭配，也偏离原意。
conclusiveness 指证据或论证具有能定论、排除疑义的性质；conclusion 指得出的结论本身，也可指结尾，不能表示“决定性”。
conclusiveness 用于证据、论证或理由，强调足以定论；decisiveness 多指人的果断或行动坚决，也可指因素起决定作用，但不指论证的结论性。
definitiveness 强调表达、说明或证据明确而不含糊；conclusiveness 强调足以得出结论、定论，重点在论证结果。
conclus- + -ive
conclusive + -ly
conclus- + -ion
con- + clude
in- + conclusive
inconclusive + -ness
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