Sulfidation
[机] 硫化作用
🗣️ 情景例句
I hate to bring this up, but this is a nonsmoking zone.
对不起提醒一下，这儿是禁烟区。
Don't you agree?
你不同意吗？
What about this one?This one's got a label.
这只是不是？这只箱子有张标签。