Polytef
[化] 聚四氟乙烯
🗣️ 情景例句
but it's not about me.
但这不是关于我自己的事。
Talk of an angel and you'll hear his wings.
说到曹操，曹操就到。
New technology has also made its own contribution to noise.
新技术也为噪音作了它的贡献。