柯林斯詞典unproductive /??npr??d?kt?v/ 1. ADJ Something that is unproductive does not produce any good results. 沒有傚果的 Research workers are well aware that much of their time and effort is unproductive. 研究工作者們很清楚他們的大部分時間和努力都不會有成果。 返回 unproductive劍橋詞典not producing very much 收益很少的；傚果不明顯的 反義詞productive not having positive results 徒然的；無傚的 It was such an unproductive meeting - we didn't make a single decision . 這是場徒勞無功的會議——我們連一項決議也沒有做出。 返回 unproductive