久青草国产手机视频免费观看_毛片网站是多少_亚洲视频中文_一区二区高清在线

unproductive

英 [?npr?'d?kt?v] 美['?npr?'d?kt?v]
  • adj. 非生產(chǎn)性的;徒勞的;不毛的;不生產(chǎn)的

英英釋意


1. not producing or capable of producing;
"elimination of high-cost or unproductive industries"
2. not producing desired results;
"the talks between labor and management were unproductive"