inutility

The inutility of the old machinery led the factory to replace it with modern equipment.

用法提示：此处“inutility”为名词，表示“无用，无益”，在句中作主语。

He finally admitted the inutility of his arguments and stopped debating.

用法提示：此处“inutility”为名词，意为“无用”，在句中作宾语。

The report highlighted the inutility of the proposed policy for solving the housing crisis.

用法提示：此处“inutility”为名词，表示“无益，无效”，在句中作主语补足语。