Eptfe
abbr. expanded polytetrafluoroethylene 多孔（泡沫）聚四氟乙烯
🗣️ 情景例句
He sees her often but doesn't want to get too involved.
他常与她来往，但不愿用情太深。
The president must have the approval of Congress to declare war.
总统若要宣战，必须获得国会的承认。
That's a problem we Chinese must pay special attention to.
这是我们中国人必须特别注意的问题。