Polyfluoride
多氟化物
🗣️ 情景例句
Five five five...one seven two oh. Hello? 555-1720
喂 喂?
Suspicion is the poison of true friendship.
猜疑伤害莫逆之交。
Great! Let's make it half past one.
好极啦！咱们就定在1：30 会面吧。