Flourosis
慢性氟中毒
🗣️ 情景例句
I see. By the way, what benefit can we get if we act as your agent?
明白。顺便问一下，假如我们做你们的代理会有什么好处？
Can I do anything for you?
我能不能为您做些什么？
The seeds must be carefully chosen; they must fall on good ground;
那就必然从精选良种做起，然后将其植入肥沃的土地，