Tefzel
乙烯-四氟乙烯共聚物
🗣️ 情景例句
I've put an X next to the place where you should sign.
我已在你该签名的地方后面标示了X。
It won't take much time.
不会花很多时间的。
It's a frisby. Do you want a go?
是frisby（飞盘）。你想试试吗？