n.密度；稠密，浓厚；[物]浓度，比重；愚钝 变形： 复数：densities 双语释义：n.(名词)[U]密集,稠密 the quality of being dense[C][U]密度 relation of mass to volume英英释义： density[ 'densəti ]n.the amount per unit size同义词：densenessthe spatial property of being crowded together同义词：concentrationdensene