Fluoroplastics
氟塑料
🗣️ 情景例句
That's a good sign.
这是个好兆头。
Finally, we came to an agreement.
最后我们达成了一致。
He was absent on Monday,Tuesday,Wednesday and Tuesday.How are you all keeping?
星期二、星期三和星期四没去上学。你们身体都好吗？