Subfluoride
低氟化物, 氟化低价物
🗣️ 情景例句
I wouldn't miss a day even if I were really sick.
即使我真的病了，也不想错过一天。
Try your friend ere you trust him.
对朋友要先考验，后信任。
Hello, Wei Hua! Nice to meet you.
魏华，见到你也很高兴！