"dirt, dregs," Old English dros "the scum thrown off from metals in smelting," from Proto-Germanic *drohs- (cognates: Middle Dutch droes, Dutch droesem, Middle Low German dros, Old High German truosana, German Drusen "dregs, husks"), from PIE dher- (1) "to make muddy." Meaning "refuse, rubbish" is mid-15c.
例文
1. I go through phases where everything I write is just dross .
何を書いてもゴミである時間がいくつかあります。
2.What 's gold and silver?Mere dross .
金銀財宝、身の外のもの.
3.Frequent skimming or improper skimming can cause a much higher dross loss.
スキミングのオーバークロックや不適切な操作により、スラグの損失が大きくなる。
4.They tried to purge metal of dross .
彼らは金属が溶融したときに表面に浮遊したごみを除去しようとした。
5.Caroline felt the value of the true ore,and knew the deception of the flashy dross .