Copper stain test
[化] 铜片试验
🧩 词语组成解析
copper
['kɑpɚ]
n. 铜;铜币;紫铜色;警察;
adj. 铜制的;
vt. 镀铜;
🗣️ 情景例句
If I had it towed over there, could you work on it right away?
如果把车拖到你们那里，能马上修吗？
Health is better than wealth.
健康胜于财富。
Get out of my life.
从我的生活中消失吧。