Fluorin
n. [化]氟
🗣️ 情景例句
And I'm torn.
但我不知如何取向。
She is sick of watching boxing.
她厌恶观看拳击。
The kiwi, which is New Zealand's national bird, is one of these types of flightless birds.
几维，新西兰的国鸟，就是这些不能飞行的鸟类当中的一种。