Eptfe
abbr. expanded polytetrafluoroethylene 多孔（泡沫）聚四氟乙烯
??? 情景例句
Like I always said, you look just like Grandma.
我老是說你真像你奶奶。
I'm young.
我很年輕。
Which speech are you going to listen to this afternoon?
今天下午你準(zhǔn)備去聽哪個報告？