Grammar Note
及物动词，宾语为被清除浮渣的金属等物体。
去除…的浮渣
drossed — past of dross
先理解核心含义，再看它在真实句子里的用法。
去除…的浮渣
To remove dross from.
Before pouring the metal, the foundry worker drosses the surface to remove impurities.
在浇注金属之前，铸造工人撇去表面的浮渣以去除杂质。
去除浮渣。
To remove dross from.
dross
Base
原形
drosses
3rd person
第三人称单数
drossing
-ing
现在分词
drossed
Past
过去式
drossed
Past participle
过去分词
The foundry worker drosses the molten iron before pouring it.
铸造工人在浇铸前撇去铁水上的浮渣。
Yesterday, he drossed the silver carefully.
昨天，他仔细地撇去了银水上的浮渣。
They have already drossed the copper in the furnace.
他们已经撇去炉中铜水的浮渣。
规则动词；dross 作动词表示“除去（熔融金属表面的）浮渣”。
He drossed the melted iron to get a cleaner casting.
他撇去铁水的浮渣，以获得更干净的铸件。
They are drossing the copper in the furnace right now.
他们此刻正在炉中去除铜的浮渣。
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及物动词，宾语为被清除浮渣的金属等物体。
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.