Polyflon
聚四氟乙烯树脂(商品名)
🗣️ 情景例句
Haven't we met someplace before?
我们以前没见过面吗？
There's something wrong with the phone.
电话出了点儿毛病。
She walked slowly into the hall and at once noticed that all the room doors were open,
她慢慢地走进前厅，立即发现所有的房门都敞开着，