Nonmetallic scum forming on molten metal during smelting or refining.

• Byproduct of separating metal from ore; fused impurities.

冶炼或精炼时形成于熔融金属表面的非金属浮渣。

• 从矿石分离金属产生的副产物；熔融杂质。

Hard stony residue from blast furnaces or mines.

• Used as aggregate or piled as industrial waste.

来自高炉或矿山的坚硬石质残渣。

• 可作骨料使用，或堆积为工业废料。

Vesicular volcanic rock ejected as cindery slag.

• Frothy, porous material around basaltic eruptions.

火山喷出形成的多孔熔渣状岩石。

• 常见于玄武质喷发的疏松多孔物质。

To form or accumulate slag during a metallurgical process.

• To remove or convert material to slag.

在冶金过程中生成或聚集炉渣。

• 将材料去渣或使其变成炉渣。

Informal, chiefly UK: to criticize or speak ill of someone.

• To denigrate or mock, often publicly.

非正式，主要英式：贬低或说某人坏话。

• 公开地批评或嘲讽。