Fluorinetherapy
氟疗法
🗣️ 情景例句
How many classes are you taking this semester?
这学期你有多少课？
When he moved to France, the children adapted very well.
他移居法国后，孩子们很适应那里的生活。
Similarly, our own present primitive chemical rockets, though good enough to orbit men,
同样，我们目前使用的原始化学火箭，虽然可以把人送入轨道，