Fluorinetherapy
氟疗法
🗣️ 情景例句
Are we ready to go?
我们可以开始了吗？
One boy is more trouble than a dozen girls.
一个男孩比十二个女孩还要麻烦。
While the men had been working inside the ship, the air-line had been giving off oxygen.
当工人们的在船舱里干活时，供气管一直在排放氧气。