slag

At last, the slag (残渣) from burning masks can be recycled to make bricks (砖块) or fill the roads.

最后，燃烧的口罩残渣可以回收用以制作砖块或填充道路。

The ethnic slag aside, he was right.

摒除种族的偏见，他是对的。

The fusibility of coal ash was different with that of slag.

煤灰与熔渣的熔融特性存在一定差异。

The cost, too, fell, because slag is free, whereas clay costs money.

因为渣是免费的而粘土需要钱，所以成本也下降了。

Girl long snack bar, do not crowd a riverside slag as a flower.

姑娘长点心吧，别把人海一粒渣当成河畔一朵花。