Ptfe
abbr. 聚四氟乙烯（Polytetrafluoroethylene）
🗣️ 情景例句
He had an emergency.
他有紧急事情。
Altogether it will take ten days to make the trip.
完成旅行将花10天。
Meanwhile, his unit was lost and all records of him had been destroyed.
与此同时，他所在部队被击溃，他的所有档案材料全部毁于战火。