Peroxychromates
[机] 过氧铬酸盐
🗣️ 情景例句
I wish I had said that.
真希望那句话是我先说的。
A constant guest is never welcome.
久住非佳宾，常来不欢迎。
Yes, it is an old photo of my family.
是的，是我们家的一张老照片。