Polytef
[化] 聚四氟乙烯
🗣️ 情景例句
She never spoke about her private life.
她从未谈过她的私生活。
We think your X200 meets our requirements.
我们认为贵方X200型符合我们的要求。
Such extreme cases must probably be taken with a grain of salt,
这种极端的事例虽不可全信，