dreg什么意思？

He left not a dreg in the glass.他把一杯水喝得点滴不剩.Solubility and amino acid composition of rice proteins from rice flour and rice dreg were analyzed.为探讨热变性米蛋白的性质与结构关系,分析了大米蛋白加热前后的溶解性能和氨基酸组成变化....

dreg的音标：dreg的英式发音音标为：[dreg]dreg的美式发音音标为：[dreg]...