Nafion
n. 全氟磺酸；电解质
🗣️ 情景例句
I did , but everything is OK,so I decided to come back.
回去了， 但一切安好。于是我决定回来。
What shall I send hin for his anniversary?
我要送他什么东西作为周年纪念礼物？
Time is money.
时间就是金钱。