Polyflon
聚四氟乙烯树脂(商品名)
🗣️ 情景例句
What did you say? I didn't quite get that.
你说什么？我没听清楚。
What do you want to be after you're on your own?
当你有自主能力的时候，你想做什么？
No, I'm English.
不，是英国人。