Nafion
n. 全氟磺酸；电解质
🗣️ 情景例句
Grandpa, get the net, please!
爷爷 ，请把网子拿来！
When should I get to the airport?
我该在什么时8点45分之前到那里。
Excuse me. Is there a police-station near here?
请问，附近有警察局吗？