Etfe
[医][=ethylene-tetrafluoro-ethylene]乙烯四氟乙烯
🗣️ 情景例句
All right. Please hold two orchestra seats for us.
好，请帮我们保留两张前排的座位。
Death when it comes will have no denial.
死亡来临时，无可抗拒之。
OK, listen carefully, please.
好，请仔细听着。