Subfluoride
低氟化物, 氟化低价物
🗣️ 情景例句
Well, that's what fathers are for.
嗯，父亲们的用处正在于此。
Every man has his faults.
人孰无过。
But, of the vertebrates, unpredictable Nature selected only snakes (and one lizard).
不过，当它们相互撕打时，毒液就成了利弊参半的武，可以杀死对方，也可以被对方的毒液杀死。