n.绿矾；（天然结晶的）硫酸亚铁

The copperas plant, also known as Sulfuric Acid, is used in the production of various chemicals.
She added a dash of copperas to the dye mixture for a rich burgundy color.
The old house had a distinctive smell of dampness and copperas, which hinted at its age.
The alchemist carefully mixed the copperas with mercury to create a transformative compound.
The archaeologist found ancient pottery fragments impregnated with copperas, indicating their use in early dyeing processes.
Copperas was once a common ingredient in folk remedies for treating skin ailments.
The historian researched the historical use of copperas in tanning leather and preserving food.
The industrial revolution saw an increase in the extraction and refining of copperas from mines.
The chemist heated the copperas solution to evaporate the excess water, leaving behind a concentrated acid.
The artist experimented with using copperas as a mordant in her textile art, enhancing the durability of her pieces.
中文释义
棕铁矿（copperas）植物，也就是硫酸，被用于生产各种化学品。
她在染料混合物中加入了一点棕铁矿，以获得深红宝石般的颜色。
这座老房子散发着潮湿和棕铁矿特有的气味，显示出它的年代久远。
魔术师精确地将棕铁矿与汞混合，制造出一种能起变化的化合物。
考古学家发现古代陶器碎片浸渍着棕铁矿，暗示它们曾用于早期染色工艺。
棕铁矿曾在民间疗法中被广泛用于治疗皮肤病。
历史学家研究了棕铁矿在皮革鞣制和食品保存中的历史使用。
工业革命时期，人们开始从矿石中大量提取和精炼棕铁矿。
化学家加热棕铁矿溶液以蒸发多余的水分，留下浓稠的酸液。
艺术家在纺织艺术中尝试使用棕铁矿作为媒染剂，增强作品的耐久性。