Fluorated
氟酸盐\\n氟化
🗣️ 情景例句
Jogging is a popular form of exercise.
慢跑是一种十分普及的体育活动。
It sucks!
好烂！
It was spring,but the weather was awful.It rained all the time.
是春天，但天气太糟了。一直在下雨。