Copperas
n. 绿矾\\n[化] 绿矾; 水绿矾; 皂矾(天然结晶硫酸亚铁)
🗣️ 情景例句
I'll have to work for years to pay off my college loan.
我得工作好几年才能还清助学贷款。
Delivery has to be put off due to the strike of the workers at the port.
由于港口工人罢工，交货只好推迟。
They play it like this, six students stand in a row in front of the class.
6个学生在全班前面站成一排。