| 单词 | dross |
| 释义 | Word Frequency dross(drɒs) noun 1. the scum formed, usually by oxidation, on the surfaces of molten metals 2. worthless matter; waste Derived forms drossy (ˈdrossy) adjective drossiness (ˈdrossiness) noun Word origin Old English drōs dregs; related to Old High German truosana |
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