Polysulfide
[化] 多硫化物\\n[医] 多硫化物
🗣️ 情景例句
Of course not.
当然不是
He has a piece of cake.
他有一块蛋糕。
But for the English examination, I would have gone to the concert last Sunday.
上个星期天，要不是有英语考试， 我就去听音乐会了。