Fluohafnate
氟铪酸盐
🗣️ 情景例句
Fifteen minutes! Thank you. Good-bye.
十五分钟 ！谢谢 。再见。
How are you feeling today?
你今天感觉怎么样？
I sat in the front of the bus to get a good view of the countryside.
我坐在汽车的前部，以便饱览农村风光。