Etfe
[医][=ethylene-tetrafluoro-ethylene]乙烯四氟乙烯
🗣️ 情景例句
It's good to meet you.
很高兴见到 。
Not all butter that the cow yields.
母牛所产的未必全是黄油。
An individual human existence should be like a river----
个人的存在应该像一条河流，