Polyflon
聚四氟乙烯树脂(商品名)
🗣️ 情景例句
sacrifices have to be made by one partner from time to time.
总要有一方必须不时做些牺牲。
What time do you get up every day?
你每天什么时间起床？
We can't decide who should open it first.
我们难以决定谁先打开礼物包。