Fluorbaryt
荧石
🗣️ 情景例句
We tested it last week on twelve- to fifteen-year-olds,
我们上一周曾在十二岁至十五岁的孩子中试过这项游戏，
That noise is driving me crazy.
那噪声吵昨我要发狂。
We can have our coffee there.
我们可以在那里喝咖啡。