Polytef
[化] 聚四氟乙烯
🗣️ 情景例句
I'm changing my schedule.
我准备把工作重新安排一下。
May I have a disembarkation card?
请给我一张离机卡好吗？
There being no one to help me, I had to do it all alone.
因为没有人帮助我，我不得不独立完成这项工 作。