Fluotitanate
氟钛酸盐
🗣️ 情景例句
Why don't you call back later this afternoon?
你何不今天下午再来电话呢？
Guess! I hope you'll like it.
猜猜看！我想你会中意的。
Everyone knows that if he shouts in the vicinity of a wall or a mountainside, an echo will come back.
大家都知道，在墙壁或山腰附近发出的喊声，就会听到回声。