词汇	silica scum
释义	silica scum 石英浮渣
随便看	Are you a romantic person Are you a romantic person? Are you a safe surfer Are you a safe surfer? Are you a salesman Are you a science student Are you a science student? Are you a Seasonal Worker Are you a Seasonal Worker? Are you a self starter are you a self starter? Are you a self starter? Are you a senior student are you a senior student? Are you a senior student? Are you ashamed of yourself Are you ashamed of yourself? Are you a single child are you a single child? Are you a single child? Are you a skier Are you a skier? Are you asking for trouble are you asking for trouble? Are you asking for trouble?