Polyfluortetraethylene
聚四氟乙烯
🗣️ 情景例句
If it ain't broke, don't fix it.
东西还没坏，就别急去修它。
Ignorance of the law excuses no man.
对法律不知不能免罪。
The doctors removed a section of the mummy and sent it to a laboratory.
医生们从木乃伊身上取下一个切片，送去化验。