Fluorin
n. [化]氟
🗣️ 情景例句
I'm a graduate of Harvard University.
我是哈佛大学的毕业生。
The shortest answer is doing.
最简短的回答是做。
At the far end of the lake, they came to huge piles of rubble which had been washed up by the water.
在湖的尽头，他们见到一大堆一大堆由湖水冲刷上岸的碎石。