drossとは何ですか？
drossとは何ですか？
- Waste or impure matter: discarded the dross after recycling the wood pulp.
- The scum that forms on the surface of molten metal as a result of oxidation.
- Worthless, commonplace, or trivial matter: "He was wide-awake and his mind worked clearly, purged of all dross” ( Vladimir Nabokov).