Copper dioxide
[建] 过氧化铜
🧩 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
Don't forget about the bet.
别忘了打赌的事。
Deliberate before you begin, then execute with vigour.
著手前要深思熟虑，执行要果断有力。
I had a letter from my sister yesterday.
昨天我收到了姐姐的一封信，