yielda孳息yieldv.生产；获利；屈服；弯下去n.投资收益；生产量yielding point屈服点yield variance收益率差异yield of lignin提取率yield selection正规选种Yield formation产量形成yield a product生产一种产品yield up a city放弃一城市yield todespair断念,绝望yield per pyong每坪实粒重Yield potential产量潜力